I've installed lots of LVT and LVP. The best stuff is the more flexible with a stronger click together lock. Some I have had to glue the edge pieces only to get the field tiles or planks to stay together because the clicking or locking edges were not made very well. Try to get the stuff that has a tendency to relax and conform to any imperfections as this stuff tends to be flexible or vinyl like. The stuff that has a more rigid surface can warp in the sun.
I wouldn't glue the whole floor. Makes it harder to replace. just glue the edge pieces. To avoid glue we have even pin nailed the edges and smaller pieces. We try to nail with the pin nails (one inch long) where the baseboard will hide the nail. Harder surfaces can shatter or blow the surface when nailed.