Hi there. I think before anyone (who seriously could be a match for you) can put their hats into the ring, you might need to explain a bit more about what sort of guild you’re looking for. “Seasoned” could describe older players, or also those who are experienced at higher levels of raiding, PvP, M+ etc.
You might also want to say if you’re wanting to stay alliance and/or on your realm, or if you’re willing to switch.
You’re welcome to check out our realm advert and see if that might fit your requirements. We have a mature player-base so we tick that particular box 
Good luck!