I can't write a high-quality answer, but I have some experience with crypto (although I will not use this system for now): You will need a Meta Mask account, a Binance (or any crypto trading platform, Binance is the one here in Brazil) account and access to Pancake Swap with a Stable Coin in mind or any other tradeable crypto when dealing
TIB with traders. This is the easiest method that I can think. It is good to learn by videos about wach kind of platform and what it means. There is a lot of "taxes" and "gas fees".
I will leave a Brazilian video here where Pedro vda transforms 250 TC into Tibia Tokens and later into Brazilian currency. I feel that the taxes of Tibia Tokens are a bit too pricy right now. Anyway, it is a legit way now to transform Tibia money into other currencies. Good luck with Tibia Tokens, Shawtay! :)
https://www.youtube.com/watch?v=rOjUKx1rkUY