My main issue has been the first layer, that look bad full off wrinkles, but now it’s somewhat ok.
My new issue, the nozzle touches the print when moving. Let’s say it prints the outer walls and when it moves to do the infill, you can see a line across? I noticed it because it made a grinding noise, otherwise I would newer have known. Now the noise is gone and there is only lines that you can feel with your finger.
I have reset the printer 5 times, done bed levelling, offsets calibration more times than I can count, changed z offset and nothing helps.
Is it this way for all 4 toolheads? I’m wondering if the issue could be a loose hotend which would cause nozzle variance between it and the plate/print. I had that issue with another printer (not a snapmaker) where I had to tighten the screws securing the nozzle to the extruder assembly. The issue caused symptoms similar to what you are describing, terrible first layers with waves and such. Removing and reattaching the nozzle, ensureing the screws/bolts are tight, and solved it.
oh, also, different infill selection and infill percentage can cause collisions with lines. For example a CUBIC infill at 3% will cause gaps in the infill and collisions/scraping. GRID is also a culprit because that infil DOES cause collision on same layer as its path intersects with itself, causing an uncomfortable scraping grinding noise against the print model especially if model is tall and wobbly. That could even cause prints to dislodge if model is tall and and narrow. I usually use reticulinear (spelling?) instead of grid because it doesn’t intersect criss/cross on same layer. Uses slightly less fillament per layer too because it is shorter path each layer as it alternates print direction each layer.
Try running a Heated Bed Leveling when you start the print, right above the toggle to take the Time Lapse Video. I’ve had this issue even after leveling the plate and it seems to help.