Outside of Goal Keeper which positions would be the biggest critical point of failure for a team?

Yes, it’s a team sport so there shouldn’t be one super important position.

However, in American football, typically we talk about the QB as the first failure point. If you have a crappy QB, you won’t probably do well. Next is probably the offensive line. Even if you have a good QB, if they have no time to throw and you can’t get a running game going, your defense will get exhausted because your offense doesn’t stay on the field much.

Is there an analog in soccer? Are there positions that you’d be pretty screwed if they were really bad but everyone else is decent to good?