Smurfing as a support main

Hi LoL community!

So recently I have gotten my main (this account) banned, so I'm looking to climb back into high platinum and hopefully diamond before the season ends. I carry games pretty hard on support (carry doesn't always mean kill everyone, for supports it is often making plays to get kills/objectives and helping the team out so the enemy team cannot capitalize on mistakes (by peeling)); however, on a smurf that has not played any ranked games, I will probably be matched with lower elo players, which means that my mmr will not rise very high even if I support really well at the level of a higher elo support. Should I play carry roles and carry my games and abuse these lower tier elo players until I start to play with higher elo players and switch over to supporting? My jg/mid/top are about high gold to mid platinum level, depending on my level of focus. If I just play support I'm afraid that my mmr during my provisionals will not rise so I can place in plat after provisionals or at least somewhere where I can play support to gain elo. Thanks for your time :)