Good adc to main
What are your opinions for a advice that will do good in lower Elos but could still work high
What are your opinions for a advice that will do good in lower Elos but could still work high
It doesnt matter
ezreal is safe as hell
lucian and caitlyn can be blind picked
sivir for low elo if you have problems with blitzcrank
She is actually a pretty good ADC to main. She has a good mid-late, is decent in lane, pretty safe, good at taking towers.
He offers a lot of damage at all stages. He is countered by tanks unless he is ahead. Always go blue build. He forgives bad positioning and rewards good positioning. His burst is high so taking down squishies is easy.
Pick the ADC champion that you like and want to play so much you want to play them every single game. That is your "main".
No one here can tell you who you like so just pick the one you do. Anyone that you like.
Whether or not you do well in lower Elos (or the high ones) has nothing to do with the champion, but how you play.

Always decent, teaches a lot about how to adc, and just a solid late game and early game pick
Mid is a bit lacking
,my fav adc to jungle for
Jhin and Tristana.

Those are probably the only adc's that should be played in the lower elos. They are super simple to play, easy kits, etc. I wouldn't branch out until atleast High Silver.