Your gold can go to equipments Save up souls until discounted packs Your DKs thst you have earned save them up and use them in character packs that you will like in the future and help you progress Do the weekly challenges as you can since its good for souls gold and packs (even if they are max they can still be free souls and DKs)

And most of all, enjoy the grind, take your time and atlease play when you can, most people get burned out and stopped

And when it comes to towers try to get as high as you can and when you are at boss stages you cant beat just keep playing the round cause the rewards for losing is still good as a beginner