Pretty much anything but Chalk Paint.............dreadful stuff, which shouldn't be used for any application at all...............I can't say enough bad things about it, and I doubt I could say anything good.
My wife was a furniture restorer and painter for many, many years, I can't tell you how many pieces she had to rescue for people when Chalk paint first came out.
Anyhow, rant over...............not your fault. So, to make it easy on yourself.................sand as much chalk paint off as you can and then wash . Apply a coat of Zinsser 1-2-- ( Blue, tin - water based - not red ) - this one :- Zinsser @ Toolstation Depending on how bad your surface was before painting, you may require two coats, try and get an even base. Then, as it's water based, you can now use any water based paint over the top. I would suggest for furniture that you use a good Satinwood - Valspar at B&Q is and excellent paint, you can have it colour matched to anything if you want. Dulux as always is also super, but can require a degree of expertise to get it to work well, It's a fussy paint, that likes a perfect working temperature. However, it dries great and is very durable.
Q
Floor
Q