This is a good guideline for which champions you should or should not be playing as a low elo mid laner. Obviously you can play whatever champion you want, but this is just generally what will work in soloq and what won't.
Low skill - high reward
These are your freelo champions, AKA, champs that are going to give you the most results for the lowest effort.
medium skill - high reward
Overall, these are champs for slightly more advanced players that will likely see great results when played correctly.
High skill - high reward
If you can manage to pick up and put some time into these champions, you will likely see drastic improvements in your elo gain.
Medium skill - medium reward
These champions aren't necessarily the best in the game, but you can still see some success with them.
high skill - medium reward
These champions are relatively hard to play, but you will see some success with them if you can learn them.
off meta picks that kind of work
These picks are really weird but can see some success when executed properly. Prepare to be flamed.
low reward champions
No matter how much time you put into these champions, it is unlikely that you will see success in low elo due to balance issues, team coordination issues, etc.
why are you playing this?
This is not an "off-meta" strat, it sucks and please stop ruining my soloq games with it.