It isn't just about the notice on moving out. It is about the requirement in most jurisdictions that notice be given of an issue and the landlord be given the opportunity to cure the defect. Once those notices have been sent, THEN (and only then) is there a basis to unilaterally breach a lease without fear of consequence. It does not appear from what you have posted that you can show that burden was satisfied...
Also, check to see if your local library has something for seniors. I'm in a small community so our library is a big hub for activity (no senior center). They have a morning with friends hour, talks, dominoes, tai chi, etc. If your town/city has a senior center, many times they will have pick up for a ride to the center and a ride home.
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