My gaming laptop runs really poorly, yet it didn't always run this badly

https://www.userbenchmark.com/UserRun/71380104

I have a laptop (Lenovo Legion 5 Pro 16ITH6H) I got over three years back, games that assumedly wouldn't be graphically intensive have frequent frame drops and just run pretty badly even on 1080p (Battlefront II and Marvel Rivals being examples), for Marvel Rivals I actually have to play the on below 720p with low graphic settings for it to just run well

This doesn't just apply to online games, games such as Outer Wilds and Silent Hill 2 Remake also run not great

I used a wifi speed test and it came out to 285.02 Mbps for download and 362.37 Mbps for upload

My laptop's specs are:

NVIDIA GeForce RTX 3060

11th Gen Intel(R) Core i7-11800H @ 2.30 GHz

16 gigs of ram

Just wondering what I might be able to do to fix what's going on, because I definitely suspect there's something not normal going on here, my laptop didn't always run so badly