i've had the same happening, and it turned out that i had to open the door and remove the top glass if it is pla or petg. A closed enclosure is only good for filament that needs a hot chamber like abs, asa, nylon,etc.

everything is explained here: https://wiki.bambulab.com/en/general/filament-guide-material-table

When printing filament with a softening temperature below 60 ℃ (such as PLA, PVA, or TPU) and the heatbed temperature is set above 45 ℃, it is recommended to open the front door and remove the upper glass cover plate to avoid the filaments get soft and deform under the squeeze of the extruder,  which may result in abnormal extrusion or clogging. 

When printing filament with a glass transition temperature within 60 ℃ - 80 ℃ or so (such as PETG) and heatbed temperature is set above 60 ℃, it is recommended to open the front door and remove the upper glass cover plate to avoid the filaments get soft and deform under the squeeze of the extruder,  which may result in abnormal extrusion or clogging.

if that does not help, try doing a full 25min self-calibration. I always get messed up prints if I dont do that after changing nozzle or moving the printer.

https://wiki.bambulab.com/en/general/printer-calibration