How old is the PLA you’re using? Is it possible it’s absorbed too much moisture?
Are you printing too fast or possibly under-extruding?
Skip the glue. I’ve found it’s just gunk that separates the filament from the print bed, worsening adhesion in my testing. Clean your print bed with rubbing alcohol before hand.
How old is your nozzle? If you’ve been printing for a few hundreds of hours, the inner diameter of the nozzle might be worn out.
How hot is your print bed? For PLA, I’ll usually keep mine around 60°C.
I don’t have a Bambu, but these are a few of the things I’ve learned with my Monoprice Maker Select v2 and Ankermake M5.
A few things I might consider/think to try:
I don’t have a Bambu, but these are a few of the things I’ve learned with my Monoprice Maker Select v2 and Ankermake M5.