Hi @micheleh ! Thanks for posting! :) If you have your own login currently, you can use that account still once your parents remove you from the plan. It should carry over all your playlists etc when you switch. Your account will revert to Free when removed, so you would need to upgrade it for Premium or Student (if eligible) so you can continue receiving any Premium perks. I have copied the steps below for removing a user from Family. You can also check out the entire support page here for any other questions. I hope this helped and have a wonderful day! :)
Manage your Premium Family plan
Members and plan details can be managed by the plan manager (the person who started the plan), from theiraccount page, on the Premium Family tab.
The plan manager can add or remove family members and control who can hear explicit content on Spotify.
Note: Only the plan manager (the person who started the plan) can manage members on the plan.