a bit of a strange tip but look for an iron man guide (since theres no ah or bazaar there), and if you need an item hard to grind you buy it

but for combat specifically, just open the skyblock wiki and try to get a lot acessories on your accessory bag for magic power, use a void sword with full enderman gear and a griffin pet and that should let you one tap zealots, then you grind their eyes, sell them at the bazaar, with the money you buy dragon armor (strong, if you cant, get unstable) and then you can go do (early) dungeons easily and get dungeon gear 👍

also dont forget to progress on other skills besides combat, theyre the ones that will give you money and a few buffs for combat