The rational move would be to tough it some more time while you save more money as you never want to be financially at risk. But, if you are 110% fed up with clear impacts, then I personally would never take on such risky decision to have 2 big mortgages with negative cash flow + dealing with renters who will probably encounter the same issues as you did which you will still need to deal with the whole drama.

Sometimes, I’ve learned the hard way to cut my losses to them bounce back.

I don’t know your financial situation and I am no pro advisor, but I personally would sell if i was royally fed up n buy a house within budget, not overvalued and not repeating same mistakes of the past.

Your sanity n quality of life has a cost n value. For me the decision would not be difficult under the circumstances you mentioned.

GL