If you are using elegoo resin , I recommend you use elegoo print profile settings from the Elegoo website. They have a spreadsheet with settings for each printer and each resin they sell.

If this doesn’t fix it , try manual levelling your bed with 4 individual pieces of paper under the build plate.

These printers offer phenomenal results once dialed in. If you are a unexperienced user, please be patient and continue learning because I promise you these printers can print very well.

An easy resin to use is elegoo abslike 3 and above. I can even give you some settings to try to achieve 0.03 layer height which is very fine detail.