Basement waterproof from inside

Hi everyone!

I'm looking for extra waterproofing measures from inside before contractors come to start reno.

I have a few hair line cracks on the basment wall and few big settling cracks on the basement ground. The house is from 1960s in Southshore of Montreal.

The basement was flooded when I purchased the house due to large wall cracks and as well as sweage backup. It had 4inch raised floor but all the wood was rotted due to contact with concrete and cracks. I hired professional company to fix all the major cracks from inside and outside to the footing. So the basement has been dry since 12month ago. We also re directed gutter and re-slope the ground with helped greatly.

We didnt go with gutting the outside as it wasnted recommended at the time and also given the hefty cost to replace deck, drive way, fence etc. We might have to if it comes to it later down the road. So far dry.

I'd like to add extra waterproofing on in the inside but there are so much products on the market which is hard to choose. There are also conflicting opinion on what to use.

I'm currently in the process of washing the wall and getting efflorescence and loose derbies off the wall. for the insulation we are planning to leave a bit of gap between stud and the wall for air flow.

Does anyone recommend liquid rubber, paint or Xypex etc?

What can I use for floor cracks and patches?

I'm a bit under the gun as contractors are coming over to start reno in 2 weeks. Thank you for your help.