cpu upgrade

Hi I have a old 2011 HP Pavilion g6-1331sa notebook that runs very slow with Win 10 20H2. CPU being AMD a8-3520m 4 core 1.6-2.5ghz clock frequency, 35V, socket FS1, dia size 228mm code name Liano released 20 Dec 2012. Want to look for a upgrade CPU that is compatible. Problem is finding one...

Hey, I was wondering if anybody knew a good CPU to upgrade my toshiba satellite l755-s5244 with. the stuff I look at with the specs and stuff doesn't make sense to me, Laptops are SOOOO much more confusuing to upgrade, especialy since things that look like they should work apparently don't...