Pease post the output of
cat /usr/share/X11/xorg.conf.d/45-evdev.conf
You may also try the following:
sudo mv /boot/overlays/ads7846.dtbo /boot/overlays/ads7846.dtbo.bak
sudo curl -L https://github.com/goodtft/LCD-show/raw/master/usr/ads7846-overlay.dtb -o /boot/overlays/ads7846-overlay.dtbo
After that reboot.