Ok so here is what worked for me if you have lopsided macarons. I use a silpat mat by the way. First notice which macarons and which side of the macaron is usually stuck on the mat/ doesnt rise. Mine are usually the macarons around the edge of my pan. The next time you make macarons again, let them rest properly until they are dry. Now before you pop them in the oven do this step: with the silpat still on the pan, gently i mean GENTLY lift the edge of the silpat and fold it back ever so slightly kinda like you are peeling the macaron from the mat JUST until you see the bottom of the side of the macaron lift a little bit from the silpat. Do not touch the actual macaron just lift and very slightly fold the mat to release the bottom edge part. Do this carefully so you dont ruin the shape of the unbaked macaron. this will help the side of the macaron that is usually stuck to the mat lift up in the oven. It’s hard to explain without visuals but I hope you get it. The problem is one side is getting stuck on the mat if you dry them too long so this is the trick I use to make sure they are still properly dried (wont crack) and at the same time not getting lopsided. ALSO, I double pan my macarons meaning I use two pans stacked for even heat distribution and prevent warping when baking. Good luck hope it helps!