In your second example, you should have highlighted muss, which is the inflected verb here, which is always in the second position in an in a declarative sentence (as opposed to a question or a relative clause or whatever).

Same as in English: "All verbs are at the end? That doesn't have to be".

Quite complex, actually :(. Ich hätte ihn fragen können.

Auf Verben verenden muss nicht sein. Oder muss man nicht.