I tell you that it happens to me very similar to you and it really costs me a lot to improve my cash game.
I think it's because in general what I saw is that in cash not everything is just going with high cards or monster hands
but they pay you with hands that you wouldn't even think of paying in an MTT.
It happened to me once that I entered a 0.02/0.05 table with US$10 and played 20 hands only 3 that came to me AA and all 3 paid me and I lost. That is, every time I had AA I lost and reloaded and so on. Since it was no longer my night hahahaha and I left very angry.
The difference for me I read in a previous comment from a colleague who said that in the MTT you would not go with junk hands against a monster hand because you would quickly be out of the MTT.
On the other hand, in cash, if you think that trash hand can win, you simply pay, if you lose reloads and if you win, you continue to increase your profits.
Also another colleague is right that it is very useful to read in posts how cash tables are played to improve your game in them.
I at least prefer the MTT or the Sgn I feel more comfortable, I think the cash tables are a great butchery.
I leave you to see a hand that I found in a post on the site so that you can analyze how they play at cash tables and see what you would do in the same situation in an MTT, if you want, send me a comment later.
Very good post, thank you. Greetings from argentina