First thing I would look into is how water is getting into those cracks in the first place. Check your gutters and make sure they’re cleaned out and at appropriate angles, and check the downspouts. Water should be draining away from your home, not into it. You might need to put up some sort of awning or tarp, and fix the angles of those pavers/concrete. If there’s water flowing into the foundation then it’s going to be a reoccurring problem.

I don’t see any standing water. I would start with a dehumidifier.

I’m not a contractor of any sort, just had to deal with a similar issue with my foundation.

I have a real old slab that was cracking and water coming through my cold joint running any finishing I had in the basement. We addressed the issue with a sump pump covering the water ingress and put a water proofing membrane over the whole slab. AIl done on the interior. We were out about 5k for the pump and another 2k ish to repair the basement finish.

From your photos, it looks like water is pushed towards the house and then getting in through the cold joint on your walkways/foundation. Maybe consult with a contractor quote or, if it were me and the basement didn’t have standing water, I’d patch the pieces that fell off yourself then seal the gap between walkway/foundation. Also the humidifier is probably a solid choice to start with

That doesn’t look terrible and you could definitely fill those in with come premixed concrete from your local hardware store. Just make sure to chip out any loose bits first.

Mold in basement is pretty common issue though because basements are always cooler from being underground. So investing in a dehumidifier would be as good idea, one that can drain out on it’s own ideally so you won’t have to empty it every other day.