PVC? What is that supposed to be.
It already fails at the description of the flooring used. A meaningful answer is only possible with a concrete indication of the conditions.
What substrate, what flooring, cheap or expensive, the backing material of the flooring, how thick is the coating.
Rental apartment or single-family house? How long is the flooring supposed to stay in place?
Basically, you should fully glue it. But then you have the problem when the flooring has to be removed again. There are backing materials like felt, jute, fiberglass or foam, flooring that expands, especially with underfloor heating, etc.
In my rental apartments, I also lay PVC floors without underfloor heating but with very smooth floors made of anhydrite screed. I do glue with Teroson adhesive, similar to Patex from the hardware store, somewhat in the middle and at the corners. I mostly use flooring with foam backing and not too high-quality PVC flooring. When someone moves out and the floor is damaged or dirty, new flooring goes in. It’s quick and cheap for me.
I don’t feel like removing adhesive residues for hours with a stripper to get the floor smooth again. And once the flooring has been laid for a few weeks, it stays put.
Measure your room, and then you can roughly pre-cut when buying. Plus 10 cm is more than enough. Then lay it in, one edge should fit. Then leave it lying for 2-3 days so the material adapts. You won’t have an edge cutter but you can also cut the other edges with a utility knife. Glue down two corners, press in the middle and glue there a bit, then glue the other corners. Done. The only important thing is to leave enough distance to the wall so nothing buckles. Use wide baseboards.
Of course, you can also fully glue it.