i got some land very thick. maybe 20 yard visibility. there are tracks but my cameras never catch the deer and i never see them

Get a chainsaw, dozer, ax or some other clearing device and open it up.

Put new batteries in the camera.

If you cut pathways the deer will use them. They are very lazy animals if they can be.

You need to cut some trails and shooting lanes. I like to put up a stand then have my daughter climb up in it. I walk out and have her tell me which branches and/or trees to cut. For the lanes, leave a screen near the bottom to make it harder for the deer to see you. Yes, deer will use your trails if it makes their walk easier.

They will follow path of least resistance.

Might also try hanging cams lower. Don't know what you are using but my old Stelth cams worked better when they were about 2 feet off the ground. Just a thought