For my first 3 years of playing MC, I played using my dad's 2006 MacOS (It was 2018), the keys were so flat that it was super easy to just graze the edge of one of them and miskick, and the mouse was incredibly slow, even on it's fastest speed (and I wasn't even allowed to to HAVE it on its max speed because my dad said "Ooooh, it's too fast for me"). For years I thought I was just terrible at PVP, but as soon as I got my own PC with a real gaming mouse and keyboard, I was just as good at PVP as everyone else.
As somone who mains The rocat (same model as RKY’s) I can say the mouse realy does matter cus I can drag click 40 cps, god bridge, and do 6 block clutches
and now that you have tried mouses, try touchpad, i use that one (and im like the only person who can do more than landing every 200th hit with it lol).
who knew skill mattered lol but actually, the technology you have actually does/can make you better, if you have a smoother mouse it'll be easier than a sticky mouse
i have the $2 dollar mouse le me say its the best other than gaming mouses you just need to adjust the sensivity and it will be a normal mouse in any gamemode