Playfullbet is a free betting platform where you have points and you can bet on , football, basketball, e-sports...
You can exchange this points for a minecraft premium!
No money needed. There is referal system, you can earn points!
People that stop playing Minecraft, share the accounts with the community.
You can search on google "Public Minecraft Accounts" and you'll see people that share a list with data of the accounts.
This account is public, you can't change the username, but you can join on private servers and official.
With this method you're supporting Mojang, you can buy an account on their website.