Invoking determinism is fine, just be aware it rarely solves the problem you think it does.

Saying ‘some bad thing happened - the universe made it happen, it’s not my fault’ - what are you really wanting to achieve with that? If it was beyond your ability to do otherwise, then you probably want to process this some other way (mindfulness / therapy / talking it out with someone) until your emotions align with the facts. Because you don’t have a “responsibility” problem you have a “thinking it was my responsibility when it wasn’t” problem. And appealing to determinism isn’t going to change your habit of doing that.

On the other hand, if you actually could have made a different / prevented it but knowingly didn’t (or were sufficiently careless that your culpability is real) then appealing to fate might be a short term plaster but it’s a bad long term fix.

And this is because rather than dealing with a feeling of guilt or dealing with how you make choices you are masking the things by making yourself out to be a passive object that life happens to. Again, as a short term cope out can be fine, but do you see how making a habit of that just undermines your ability to believe you can grow and be better?

At it’s extreme appealing to determinism can remove everyone’s responsibility. “Everything’s inevitable”… “We’re all just biological machines” … “I couldn’t help it”… And while, from a certain point of view, physics can lend evidence to determinism. It doesn’t actually affect how life works because even if we are all biological machines, we still need to ascribe what we call ‘responsibility’ to the biological machine through which something undesirable came. People will still want to avoid people who hurt them. The law will still have to segregate the wrong doer. Even if everything is now “deterministic”. (The Amazon warehouse sorting robots will isolate a misbehaving robot even if that robot has not one jot of control over it’s programming - if you see what I mean).

So all I’m saying is belief in “fate” has an illusory power. Where it makes us feel less bad about something. But taken to it’s extreme it makes us not feel responsible for anything, while life carries on as normal and inevitably penalises us for that.

So it’s better (for you) to expose yourself to the pain of “yes it was my fault” (if indeed it was). But then in that pain not to give way to hopelessness, but rather realise pain (if based on truth) is a fuel by which to change yourself. Get other’s help if necessary. But don’t give up the opportunity to grow. The pain is actually a sign you care, don’t deaden that. It’s the stuff of life.