In fact, no matter how you get WoW Classic Gold in any way, you need to accumulate a lot in advance. For example, killing a lot of monsters or collecting various materials in the wild. But there is a way to meet your requirements, of course it is not free. You can go to https://www.ffwow.com/wow-classic-gold for help, they sell WoW Classic Gold at the cheapest price, and are available on all servers.