There are a lot of sellers out there offering "flexible" beds and the like

I wipe my blue tape with isopropyl alcohol every 2nd or 3rd print.

ABS slurry for ABS, White glue+water for PLA. Blue tape is messy.

I use alcohol-based glass cleaner the same way when I’m having first-layer adhesion problems on tape, like for objects that have lots of tiny islands or complex patterns. Works great. You don’t even have to let it dry. Yes, occasionally the print picks up blue fuzz, but mainly on prints with large surface area that have less need for alcohol. And I consider it a minor defect if the print is successful. It could always be sanded.

I haven’t tried glue yet because it’s messier than tape.

I use Abs slurry for hips (thin spread) and it works but I use all natural color (even for pla) prints stable and better

I use Glass Build Plate Wizard it works on alluminiun too. removing the prints are really easy.

Now I use PEI sheet, works waaaaayyy better