Have you tried recalibrating the probe? I had the same issue with my Sovol SV08 where no matter how much I tried, nothing would stick, until I recalibrated it.

Also, how long do you preheat before printing? Depending on the beds material things can move quite a bit with heat. Sometimes 0.01mm can make the difference between a successful and a failed print. Try heat soaking your bed and nozzle at working temperature for at least 1/2h before calibrating and printing to give time to everything to expand.