this is an empty world with biomes.
you can kill zombies for iron for a cauldron, so you can get water. with water you can get cobblestone, and make a better mob farm (if you made one already). another thing to do with a cauldron is get more lava, via the wandering trader's dripstone trade.
you can not beat the game (I don't think so). once you make it to the nether, you have a few blocks. these are magma, soul soil, warped nylium, and crimson nylium.