Turntable suggestions for a shaky wooden floor

Get an isolation rack such as:

https://www.amazon.com/IsoAcoustics-Delos-Turntable-Isolation-Butcher/dp/B0846V8Y41/ref=asc_df_B0846V8Y41?tag=bngsmtphsnus-20&linkCode=df0&hvadid=80195746823017&hvnetw=&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=&hvtargid=pla-4583795273736216&psc=1

I have a listening room suspended over a two car garage and had quite a time getting vibrations under control. What I did was this:

1. Very heavy Timber Nation 4 Shelf Maple rack with spikes at every shelf support...

2. Iso-Pucks under all equipment.

3. 9 large 4" thick bass traps..two corner and 7 wall

The isolation table suggested above is a good suggestion. I would not buy a new turntable and cartridge unless you were going to spend a good bit more...and my suggestions above would cost many times what you want to spend on a turntable..so isolation table and Iso-Pucks where needed are the way to go, or relocate your listening space.  Also, people use wall mounted turntables to overcome this sort of issue.

I hate to mention this, but for the best "bang for the buck" used digital is probably the way to go. I say this because I had to spend four times the amount on my analog gear to get it to sound better than my digital equipment.

Sota hung.