You can try the waterproofing paint. Might not help that much though if your cracks were that big.

You might also want to run a dehumidifier down there too.

if you have cinder black walls, try coating them with drylock

you also may check the perimeter of your house
if the ground isn’t sloped away from the house properly then rain water will continually be your bane

I am sorry your basement is flooding. What is flooding your basement? Water? If so their should be a valve you can turn off to stop this until you get your plumbing fixed. Top Secret Coatings has pool coat which is a water proof coat, and many epoxy’s and floor finishes that would work for water proofing your basement, but I think that would cost about same as just getting the pipe replaced. Also here is a quick fix that would cost about $30, you may want to just get a small torch after you turn off the water, and try to melt some cauking metal onto the leaking pipe if you can isolate which pipe the water is coming out of, that is what a plumber or pipe fitter would do first. I wish you the best on this project.

First you need to know the source of the water before you can try to fix it.

Mine was a high water table and a drainage system to a sump pump was the only solution.

First make sure you have good drainage around the outside of your house.

If the basement is finished you will want to gut it. Get everything out of it so there is nothing for mold to feed on. Don’t store any wood or paper products mold loves to feed on that stuff.

Pump any standing water out and be sure to ventilate as much as possible. Put an old squirrel cage blower in the window to pull damp air out of the basement.

If your problem is a high water table you can always rent an electric jack hammer and put a sump pit in the floor and buy a sump pump to remove as much water as possible. That is the $300 fix.