I'm glad you've got it sorted for now. However here are some maintenance tips
IPA may not be removing all residue from the bed, as it struggles to dissolve longer chain oils waxes and greases. Since your bed surface is a removable build plate, I'd suggest occasionally removing it and washing with really hot water + detergent, gently scrubbing with a fresh green pan-scourer, then a thorough hot water rinse, wipe dry with paper towel then thoroughly clean with IPA to remove any detergent residue.
When you *know* its clean, inspect the surface carefully under oblique lighting to see if its damaged anywhere, and if any marks are noticeably rough when you run your thumbnail across them and are of significant size and inconveniently located (i.e. too near the bed center), it may be worth replacing it.
Also check for flatness with the build plate in place, using a good quality straightedge or good quality steel rule, held on edge, across it corner to corner each way, with a bright light behind it. You are looking for negligible and even light leakage along the line of contact. Any bright sections indicate a low spot, thus a warped bed, which (if you aren't using an auto-levelling sensor doing multi-point height correction) is likely to cause adhesion issues.
The nozzle is unlikely to be a problem unless its badly worn due to many many rolls of filament (or a roll or two of abrasive filament) passing through it or unless you've had a mishap where the print head tried to 'dig to Australia' really hard, which dinged its tip. Make sure its exterior tip is clean (wipe when hot with a wad of paper towel), and run the head up to near Z max and do an extrusion test. Once started, the extrusion should come out pretty straight, hanging down, and be round. If its flattened, grooved, or persistently curls up to one side, even after wiping the nozzle repeatedly, the nozzle should be replaced.
If you follow MarkF's advice and use hairspray as a bed adhesion aid, spray it on the build plate well away from the machine as you *don't* want the overspray drifting onto the leadscrews or guide rollers or their running surfaces. Also it tends to build up on the build plate as IPA doesn't dissolve it easily. I use it printing on glass, and find that household ammonia solution goes a good job of stripping it off followed by an IPA wipe to remove the last traces, so I can re-coat the build area evenly. *DON'T* get ammonia solution anywhere near the electronics, motors, bearings etc. or near any connectors as it is notorious for corroding copper.