Ikea sells cheap table legs that you could replace with: https://www.ikea.com/us/en/cat/legs-trestles-11845/

I used 2 of the Tillslag for a desk, and I really like them.

If you know that the table won't be moving, you could add some brackets like this to the studs: https://www.rockler.com/heavy-duty-steel-shelf-brackets-black-finish