My mouse only works on right click and no Dock

When I start up my Mac Pro, I can’t access the Dock, only my right click works on my mouse and I can’t click on any files. But I can access the files via right click and I can get the Dock to appear from the hide dock setting if I sleep the machine and then wake it. But even after that the problems persist with mouse and the apps on the dock will magnify but I can’t launch them unless I right click. Rigs been working fine for years, until two days ago. I cleared the NVRAM and rest the physical ram, problem’s still there…. Any thoughts?