Generally the best is to start with a decent set of binos, Steiner comes to mind for price/quality, then transition to monocular. It’s called a scope...
Seriously, get a decent set of no focus binos, you won’t be looking at the tweety bird at 20’ but past that, everything’s in focus with no adjustment. Look for large pupil distance, like 9mm or better, 7x is adequate for most use, 35mm objectives minimum. Tie it on with a good set of binoc holders, the kind that strap on your chest, you won’t even know you are wearing them.