Where to buy tickets for Cádiz FC game?

Hi all, I'm trying to plan a trip to Cádiz and as I've always been a Suso fan since his AC Milan time, I'd like to watch him live in Cádiz. I haven't got a precise date in mind yet, but I was thinking of going on the 15th of August for Cádiz CF Vs Celta. Where can I buy the tickets? I checked on some websites other than the official one because there I need to create an account. What do you recommend/suggest?

I'd be very grateful if you could also suggest some nice cheap accommodation for two :)

Thank you so much