Bottom layer(s) detached from main print

Hi all, I need some advice, I have experienced some print failures whereby the bottom layer(s) have come away from the main print,
In this case I have used PLA to print with, not a Bambu Lab provided filament.

As a starter: stop using Grid infill.

And up the filament printing temperature…

Can you recommend a better infil?

Gyroid is a very popular non crossing infill pattern.

They should make it the default, because this problem seems to bite everyone sooner or later.

Thanks, just using this infill pattern resolved the issue, thanks for the advise.