Next upgrade for vinyl rookie

I would suggest waiting until you have more money before you upgrade. Small upgrades are generally more expensive, because they quickly get replaced, usually at some expense. If you had to do something now, consider a phono stage.

If you want something now, think about an isolation platform for the Rega such as a Target TT1 wallmount. Experiment with various cones and platforms on the rack. But I think you get the most bang for you buck if you upgrade as early in the chain as possible.

Phono stage is a good idea but will probably exceed your budget.

I'd say buy a used vpi 16.5 cleaning machine. That's a ugrade that you will forever keep. It's a big step up in sound quality.

Then upgrade your table down the road...