They're not your fault, they're at most your responsibility. You should be paid triple what your coworkers earn if you're willing to accept fault for what they produce.
Are you perhaps a team manager and insisting that all your team PR's go through you? Might I suggest that instead of signing off on all PR's yourself, setting up a good testing framework may help you sleep better at night?
I can never claim I can find all the bugs, I’m not even that smart. Thus I can comment on style, overall compatibility with existing mechanisms. Ask/remind which tests were run.
Trivial stuff is easy to catch, refactoring parts I’m familiar might help with pitfalls known to me.
Still I can’t see how one can claim finding all bugs is possible.
