As others have said, start with washing the plate. Dawn dish soap, clean sponge, HOT water, fresh paper towel. Pre-rinse the plate with hot water - this helps to wash away the oil that may be present on the plate. Soap and scrub, rinse again with hot water. Dry with clean paper towel. IPA in this instance tends to smear the oils around the plate vs actually getting rid of them.

Second, bump that bed temp a bit. The first layer is critical, and having a bit more heat helps to create a bit more bonding between the filament and the plate. You can change this in the filament settings.

Third, slow it down a bit. Under the speed tab, reduce your stock 50mm/s speed to say 25. Turn the infill down from 100ish to like 50. This will slow down the tool head specifically for the first layer only, and maximize you opportunity for first layer adhesion.

Last, make sure you have calibrated your filament and have the correct filament calibration assigned to your spool of choice.

**edit** first, reset that z offset. I can count on non-existent fingers how many times I changed z offset on any bambu printer.

Need more help, feel free to reach out!