That may be. You might also need to change saddles.
It can sometimes be a fine line. I’ve gone to a 2 bolt micro adjust seat post. I changed saddles a little while back and over the course of a couple rides I’d stop and make a slight adjustment. It was a good investment for me.
A trainer can be a good place to get an initial setup. Ideally you would like to sit up hands free while on the trainer, can be tough with age, and not fight the saddle angle.
John