Get a home inspection if you are serious about the house. American Society of Home Inspectors, ASHI
Also in Canada.
The foundation is block, and will always look like that, even after you paint it again...it will peel. There are remedies, but they have to be done on the outside. DO NOT finish this basement in the future unless you control the moisture. You can do what you want, just my
The attic insulation?
No idea without testing.
And the chimney in the attic looks pretty scary, it may need some work.
Look at the electrical also, old panels need upgrading, sometimes you cannot get insurance.
And I always recommend folks get a lawyer for their transaction to help find an inspector if your not comfortable with my suggestion.
Good luck, anything can be fixed...but how much $$ you got??