There is so much in table set-up and tweaks. We can recommend until we're blue in the face. But in the end, all that may REALLY be needed are some good tweaks that will help your existing system perform at a higher level. Cones under the plinth, motor vibration isolation, [maybe] a different platter. careful leveling and cartridge setup. Maybe a different cartridge....
All these tweaks can help significantly improve your existing [potentially much better than average] vinyl playback system.
All these tweaks can help significantly improve your existing [potentially much better than average] vinyl playback system.