Exterior foundation wall issues
When I looked around the exterior foundation wall of our house, I found there are few places that seem to need some repair or amendments. Please see the pictures below:
1. This one shows there is a small hole on the wall (during construction?)
2. This one shows that the siding and the wall edge has a narrow space:
3. This one is at downspouts side of the foundation wall. Is that deterioration?
My question is how to fix them by DIY? What material I should use (cement, caulk?)