You MAY have grounds to sue. In part it depends on steps you may or may not have taken when you discovered the issues. Recommend you see a MD landlord tenant attorney and discuss your options.
You have a number of issues: working hot water is a health and safety issue for which your landlord is directly responsible.
Your landlord does have some responsibility for security too--you need to ensure you contact police if you have been robbed.
You think you are being poisoned--contact police if you believe this is the result of someone’s acts against you; you MAY have grounds to sue the LL if the LL is poisoning you by asbestos or some other toxin in the property.
Not sure what to make of the 'voices' you hear.
If you informed the LL about the broken outlet and he fixed it, you likely cannot no complain about the matter. Ditto the carpet not being vacuumed.
READ THIS BEFORE CALLING OR EMAILING ME: I am licensed to practice before the state and federal courts in Virginia. We have not established an attorney-client relationship unless we have a signed representation agreement and you have paid me. I am providing educational instruction only--not legal advice. You should speak with an attorney to whom you have provided all the facts, before you take steps that may impact your legal rights. I am not obligated to answer subsequent emails or phone calls unless you have hired me. I wish you the best of luck with your situation.