Slow download speeds

On any app where I try to download anything I get around 20 mb/s but on my speed tester I get almost 800 mb/s and I’m supposed to get 1000 download at upload speeds, I have my pc connected to Ethernet and idk what to do cause I’ve tried everything.

On any app where I try to download anything I get around 20 mb/s but on my speed tester I get almost 800 mb/s and I’m supposed to get 1000 download at upload speeds, I have my pc connected to Ethernet and idk what to do cause I’ve tried everything.