Can I post here for promotion or any discord server or something like that? I don't wanna break rules that's why asking. discord server link is crypto learn and earn related that's why asking.
Yes you can, or you can buy
copper member and be an active poster in meta, then you already did (promote) it without worried breaking rules, even you can use referral link on your signature and able to post an image. The important thing is that not something harmful and detrimental to other users.
Newbies can now pay a small fee to enable images