I’ll wager that this is classic dirty play syndrome.
The simplest way to rule out a dirty plate is to do a first layer test. The easiest way to do that is to create a cube primitive that has the dimensions of 240x250x0.2mm
Here’s a post where that issues is discussed lower down in the thead on that issue with examples.
Alternatively, you may have to tune your filament but my money is on it being a dirty plate. If you state that you cleaned it with IPA, that isn’t good enough. You will want to use dish soap and run it under very hot water until you can visually see that all the soap has washed away. You should not need a sponge if you’re doing it correctly. The dish soap if smeared on correctly will dissolve any oils or contaminants off the plate and it will be obvious because the soap residue is easy to spot.