Trying to record/use some vocal parts on tracks even if just some background elements here and there could help slowly get a bit more comfortable actually having your voice be more front and center in a track, at least it did for me.
I didn't like my own voice either when I was first starting to try adding my own vocal stuff on tracks, but took over a year or two to get comfortable with having it front and center, so before that i usually added tons of effects to change the sound of it, since I didn't like the raw sound of my voice 😂.
For the backing stuff, if you don't normally do it, you could try first making the skeleton of the track with just a piano sound. That way it might be a bit easier to settle on the melody, harmony and rhythm before starting to arrange it.
I have the same issue with drums usually, since i just make up a initial pattern and then forget to change it after that😅, but I've found that doing a piano skeleton of the building parts for the track, it helps me with that.
Especially with bigger arrangements, like an orchestra, it can get really overwhelming quickly if I haven't made a piano base to start arranging from 😅.
These things have worked for me, but what works for me might not be the way for everyone 😁.