how to get tickets

hi everyone,

a friend and I just realised we will be in london when wimbledon will be on and we would love to go and spend a day there!

I was just looking on how to get tickets and it says the public ballot is closed? what does this mean? are we still able to get tickets?

I was reading about the queue but very confused lol

and do they do anything like a ground pass like at the AO? or do we just have to buy the tickets for the centre courts?