After leaving a club, it may take some time for the system to
recognize that you've left. This may result in a delay before you're
able to join another club. Also, please note you won't be able to rejoin
a club for 24 hours if you have been previously kicked out from it. If
this is the case, you will need to be re-invited or request again to
join the club after the 24 hour cooldown to be able to be a part of it.

If you're trying to join an "ask to join" club, please remember that
you can only send one join request to a club at a time. You will not
be able to send another request if you're still in a club, or if your
previous request still appears in the chat window of the club it was
sent to, even if this request has been rejected. You can join a club
immediately if you get a direct invitation from the club Manager or
club Captain.

Just hang in there for a bit longer - you'll be able to join another club before you know it.