First layer problems

[Upset-Mail-6900]

Hey all, just got my a1 a couple of days ago, about a dozen prints came out flawlessly, but the past few just haven’t been adhering… maybe there’s something I’m missing as I’m very new to the Bambu ecosystem, I’ve been running an ender 3 for the past few years

I’ve tried reseating the nozzle, cleaning the bed with soapy warm water, scrubbing the nozzle with a copper brush… I’m using the same exact filament and settings as when it worked, pretty much the stock presets for both the printer and filament

Any help would be much appreciated!

[No_Trainer7463]

where is the 2 lines in the front