coroutineを動かしたい

前提・実現したいこと

unityでターン制バトルを行うシステムを作っています。
coroutineでEnterを押すまで処理が止まる機能が所々実装できません

発生している問題・エラーメッセージ

coroutineが動かない場所がある。

該当のソースコード

c#
1 Message.text = "敵のターンだ！";
2                yield return new WaitUntil(() => Input.GetButtonDown("Submit"));
3                /*Message.text=*/Debug.Log( list[turn].name + "の攻撃!");
4
5                yield return new WaitUntil(() => Input.GetButtonDown("Submit"));// <=起きない
6                audioSource.PlayOneShot(sound[1]);
7                PLstatus.hp = PLstatus.hp - list[turn].attack;
8                if (PLstatus.hp <= 0)
9                {
10                    PLstatus.hp = 0;
11                }
12                HPchange();
13                Debug.Log("ターン" + turn);
14                Debug.Log(list[turn].name);
15                Message.text = PLstatus.Playername + "は" + list[turn].attack + "のダメージを受けた！";
16                yield return new WaitUntil(() => Input.GetButtonDown("Submit"));
17                IsRunning = false;
18                turn2 = true;
19                Debug.Log("敵オワタン");
20                Debug.Log("turn2" + turn2);
21                turnjudge();

c#
1IEnumerator PlayerAttackTurn()
2    {
3        Debug.Log(IsRunning);
4       if (IsRunning)
5        {
6            yield break;
7        }
8        IsRunning = true;
9        Message.text = PLstatus.Playername + "のターン";
10        Debug.Log("ターン" + turn);
11        Debug.Log(list[turn].name);
12        yield return new WaitUntil(() => Input.GetButtonDown("Submit"));
13        Message.text = "行動を選択せよ";
14        yield return new WaitUntil(() => Input.GetButtonDown("Submit"));
15        At.interactable = true;
16        At.alpha = 1.0f;
17        yield return new WaitUntil(() => trigger.Judge == true | trigger.Judge2 == true);
18        if(trigger.Judge == true | trigger.Judge2 == true)
19        {
20            switch (trigger.number)
21            {
22                case 1:
23                    AllMenue.interactable = false;
24                    AllMenue.alpha = 0;
25                    At.interactable = false;
26                    EventSystem.current.SetSelectedGameObject(AttackButton);
27                    Monster[trigger.SelectMonster].hp = Monster[trigger.SelectMonster].hp - skill.skill[0].value;
28                    Message.text = Monster[trigger.SelectMonster].name + "に" + skill.skill[0].value + "与えた！"; 
29                    yield return new WaitUntil(() => Input.GetButtonDown("Submit"));// <=ここが起きない
30                    IsPlayerTurn = false;
31                    IsRunning = false;
32                    turn2 = true;
33                    trigger.Judge = false;
34                    trigger.Judge2 = false;
35                    turnjudge();
36                    break;
37                case 2:
38                    AllMenue.interactable = false;
39                    AllMenue.alpha = 0;
40                    At.interactable = false;
41                    EventSystem.current.SetSelectedGameObject(AttackButton);
42                    Monster[trigger.SelectMonster].hp = Monster[trigger.SelectMonster].hp - skill.skill[1].value;
43                    Message.text = Monster[trigger.SelectMonster].name + "に" + skill.skill[1].value + "与えた！";// <=ここが起きない
44                    IsPlayerTurn = false;
45                    IsRunning = false;
46                    turn2 = true;
47                    trigger.Judge = false;
48                    trigger.Judge2 = false;
49                    turnjudge();
50                    yield return new WaitUntil(() => Input.GetButtonDown("Submit"));
51                    break;
52                case 3:
53                    AllMenue.interactable = false;
54                    AllMenue.alpha = 0;
55                    At.interactable = false;
56                    EventSystem.current.SetSelectedGameObject(AttackButton);
57                    Monster[trigger.SelectMonster].hp = Monster[trigger.SelectMonster].hp - skill.skill[2].value;
58                    Message.text = Monster[trigger.SelectMonster].name + "に" + skill.skill[2].value + "与えた！";
59                    IsPlayerTurn = false;
60                    IsRunning = false;
61                    turn2 = true;
62                    trigger.Judge = false;
63                    trigger.Judge2 = false;
64                    turnjudge();
65                    yield return new WaitUntil(() => Input.GetButtonDown("Submit"));// <=ここが起きない
66                    break;
67            }
68
69        }

c#
1public void system()
2    {
3        if (!finish) return;
4        if (list[turn].judgePL == true)
5        {
6            IsPlayerTurn = true;
7        }
8        else
9        {
10            IsPlayerTurn = false;
11        }
12        if (!IsPlayerTurn)
13        {
14            Debug.Log("敵");
15            finish = false;
16            StartCoroutine(Enemy());
17        }
18        else if (IsPlayerTurn)
19        {
20            Debug.Log("味方");
21            finish = false;
22            StartCoroutine(PlayerAttackTurn());
23        }
24    }

補足情報（FW/ツールのバージョンなど）

スクリプト内の起きない場所にマークしました。
trigger.numberの引数

c#
1    public void Skill1()
2    {
3        number = 1;
4    }
5    public void Skill2()
6    {
7        number = 2;
8    }
9    public void Skill3()
10    {
11        number = 3;
12    }
13    public void MonsterSel1()
14    {
15        Judge = true;
16        SelectMonster = 0;
17    }
18    public void MonsterSel2()
19    {
20        Judge2 = true;
21        SelectMonster = 1;
22    }