I’m in the flat tarp brigade.
A cut down/homemade mosquito net wads tiny and lightweight and worth its weight in gold. My mosquito net makes a bug free space only around my head and upper body. It simply drapes onto the ground sheet around me and onto my sleeping bag about my waist point, with only the part over my head tied/rigged up. I want mosquito buzz away from my ears, even if they can’t get in to bite.
Most of my backpacking has been well away from places other people camp, so haven’t had a mouse bother me for years. A spot where backpackers regularly camp means critters from mice to deer get used to raiding backpackers and their gear/food. By deer seasons in the mountains, there are so few mosquitoes that I don’t us a net.
For more than one person, I carry a full size bed mosquito net from REI. Rig it sideways to the sleepers and tie up one side, (which is over the heads when rigged sideways). Let the rest drape to the ground and close/flatten any open spots. Three reasonably friendly men can sleep side by side with head and upper bodies in the bug free space.