As for me, it's losing my private keys by accident. Also, I'm afraid that BTC dumps during the transaction.
maybe that is because you have invested more money that you can afford to lose. psychologically speaking people are more scared when they are taking bigger risks. that is why when it comes to investment they always say "invest what you can afford to lose".
so maybe it is time for you to rethink the amount you have put in.
Common mistakes that new people in cryptocurrency world is they are letting the good news too much in their head (getting too much excited) giving themselves false hope. Psychologically speaking also, this makes them too full of themselves, and the outcome of their actions (investing too much), then suddenly the joy that they've felt in the beginning turned into sorrow, because just like what you have said, they lose the money they can't afford to lose.