Consider the humble “em dash” — some people use it to interject a completely different sentence in the middle of another — the next time you’re trying to avoid parentheses.
You can, although probably should not, use semicolons; they can be used to join related statements that could, very frequently, also stand on their own.
The thing is - and I say that from experience (being somewhat on the ADHD spectrum myself) - that there are no limits to how many of these you can use; or at least that's how it feels to me (sorry!).
i do this; i just have so much to say, and there are only so many conjugations and commas you can get away with -- without it becoming a run-on sentence (i may have a run-on mind).
Usually by my third edit I’m ready to send. Of course, by then I’ve begun to question if anyone is interested in my option anyway and why am I sending this email? They probably know all this already and I’m too stupid to have realized it.