tovaf - If you don't like your chosen covenant, you can change it. The process of joining a new covenant will be quite simple, but only if you have never been a member of it before, otherwise the process becomes much more difficult.
Joining a covenant you have not previously been a member of:
Travel to Oribos and speak with the representative of the covenant you wish to join, or Receive a mission and proceed to your new covenant's shrine

yaferim - This turned out to be too confusing for me. I lost a lot of time to figure out how to move on. The pros of Legionfarm helped me out. I took Shadowlands boost https://lfcarry.com/wow-shadowlands
This has greatly enhanced my game. Playing with the pros opened up new opportunities for me