Isn't a thing -
Q: Can I use my World of Warcraft Trading Card Game codes in WoW Classic?
A: Codes from the TCG won’t be usable in WoW Classic.
https://news.blizzard.com/en-us/world-of-warcraft/23090136/world-of-warcraft-classic-faq-what-you-need-to-know
Do you take everything people write literal, like you're asking questions you know aren't the case, you see someone you recognise, enough to consider them a twink simple. Stop being a wet wipe.
Just from having a quick search your cpu is really only just meeting the minimum requirements for overwatch which is probably creating a bottleneck for the rest of your computer and possibly even causing the cpu to overheat which combined are probably what's giving you the issues
Overwatch is a much newer game though so depending on what other games you play and don't lag in will help tell if it's just your system overheating or bottlenecking, you can download speedfan or a programme like that and have it open when playing to see what your cpu and gpu temps go to while...
Devm has Grappling on his team, which flyhacks in 2s on EU and lags through walls/pillars and has DDoSed people and these people are allowed to play? Christ Conq smoking that good shit fam