Help❓ T6M Public Match Fix?

I've searched a lot, and couldn't find any fix for public matchmaking. When I go to bo2 with 4d1 account, and go online, I see 0 online and I can't join any match.

I've tried using the t6m fix which includes 2 files (steam_api.dll and other), but doesn't work.

I've seen many people playing it online using 4d1, is there any solution for this? Thanks