How to Reduce Thighs and butt

I have been a part of FB YouTube family from the beginning. I have followed MANY videos & bought a few of the work programs. My question(s) to you is; how can I reduce the size of my butt & thighs? I have gotten the lower body programs & I love weight lifting but I am not sure what the issues are when it comes to slimming down my lower half. It feels like I am gaining size esp on my thighs. Please please help