Good gosh, I know exactly what you are talking about.
However, I find I have less issue, because I don’t have to spend as much time with spelling and composition because I feel that organically, it just comes out right for me.
I hate spell checkers, because more often they introduce a damned error in context even if the word is spelled correctly.
And I admit...I look down my nose and sneer at products like “Grammarly”, and find myself in the less desirable situation of feeling like a snot, looking askance at people who feel they have to use it!
Sigh. I admit, I don’t like feeling like that. Some people really DO need to use those kinds of tools.
I guess I change my mind, at least subtly, when I compose. So I do reverse course in the process of a composition. Consequently Im green with envy of anyone who can just let it rip and have it come out satisfactorily.