Not familiar with G10, but my PEI sheet has been the best thing for adherence with PLA I’ve used in the last 5 years. I’ve used hairspray, glue sticks, blue tape, glass, and combinations of them. Straight PEI is still better than all of them, for me anyway.

From what I read before I bought mine, smooth PEI works great for PLA, while the textured PEI is better for ABS and other types that have larger adherence issues.

Try a PEI bed. I just got an official creality bed on Amazon for $20 US.