I used epoxy + glass flake combo.
Very easy to diy.
You have choice to maintain color of your existing floor tile by using clear epoxy.
Or change the color completely to your choice.
Did the coating for 3 layers and still good until now for more than 8 years already.
Spent around 1K total for 2 bathrooms (decent size bathroom)
Another pro is that it took total around 48 hours to fully cured for the whole 3 coatings.

DIY after tenant move out

filler from mr DIY less than rm10

&

epoxy paint rm373







used 2L for 2layer