These cheep feet have an extreme design flaw.
As soon as you turn the feet out a little, the inner tube wobbles in the outer tube. So you can't use these feet.

That's why I developed an inner guide ring and a new top ring and have already fitted them. The table is now stable.
 

Print a first test part of both to find the best fit, before you throw 4 pairs on the print bed.

Preffered to use PETG or ABS.

These are the feet I used: https://www.amazon.de/dp/B09WH71M61?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1