I don't know what to chooosssee pls help!!!

okay ik i haven't posted in a long time but I rlly need help!
I'm thinking of changing my cert criminology to alevel sociology (I meet the entry requirements!) because apparently russel group uni's don't accept cert criminolgy as an equivalent to one a level? also im doing btec psychology and btec performing arts and i kinda want to do at least one A LEVEL but idk...
PLS HELPPPP

Hope I'm not too late, but what course do you want to study at uni? And also it seems like a valid point to do at least one alevel cause Russell groups are very keen on alevels and most don't accept BTEC's depending on the degree (don't quote me on this..) but try checking all the entry requirements Russel groups universities want then decide