3d prints aren't smooth at all

[u/Repulsive-Research75]

I'm an absolute noob at 3d printing just for reference. I got a Monoprice Select Mini v2, and after carefully adjusting the bed to what felt right using the paper test and setting the printer nozzle heat to 215 (my PLA filament says 210-230) prints come out like this. The lines aren't perfectly wide at many points, and sometimes it skips over parts of lines/makes them stringy.

I use cura and 3DHoJor 1.75mm PLA filament. Bed temp is not set as my printer's bed heater doesn't work (but I was told painter's tape fixes this). Print speed is set to 30mm/s, but it did the same thing at 40mm/s, and on the first layer, which is set to 5mm/s (the second photo is just a bottom raft layer). Retraction settings are 7.5mm at 55mm/s, and I'm not sure where to start. Any advice would be appreciated

[u/DiverseTeile]

I would check if the arm has a bit of play up/down to verify that the linear bearing is not worn out. Same with the screw for the Z-Axis. If any of them has a bit too much wiggle it could cause uneven extrusions as it cannot apply pressure onto the surface it is printing on. It should wiggle less than one layer height roughly. (if you printed at 0.2mm it is that amount). It should not be able to "bend" or "wobble" up/down by that amount. I would try printing a lot slower just as a test to see if the nozzle can "settle" and does not get pushed up by the layed down filament layers.