Really the only thing you can do is to keep joining guilds until you find one that fits. It can be a long process, but here are a few places to start.
Sticked at the top of this forum is a thread dedicated to guilds that are new player friendly. The thread is a few years old now so some of the guilds may no longer be active, but if you scroll through, I’m sure you’ll find a couple on your realm. Or if one sounds good on another realm, it might be worth reaching out to see if they’ll be a good fit for you
https://us.forums.blizzard.com/en/wow/t/new-player-friendly-guilds-check-in-here/903
Another place to search will be your realm forums. It’s possible that something might catch your eye there.
https://us.forums.blizzard.com/en/wow/c/kiljaeden/73
If you’re looking in the in game guild finder tool, I’d suggest searching for guilds that advertise as leveling or social guilds. These will generally have a more laid back atmosphere and be more perceptive to new player’s needs.
The best advice I can offer though is to just keep searching. If you join a guild and it’s not what you were hoping or thinking it would be, just /gquit and try another one. As I said at the beginning, it can be a bit of a process to find the right one for you. Best of luck!