Housing zones not rebuilding

One of my cities had a small accident (not an ingame disaster). I went afk for a bit when i came back a lot of my houses had burnt down or were abandoned, so i destroyed them.
My problem now is that none of the buildings are being rebuilt. I have tried unzoning and rezoning it but with no luck. Both residential and commercial zones seem to be affected..
I'm also facing a bit of a crime spree in my city since this happened, i placed 3 police stations in my city to clean this up but with very little luck. My biggest concern is that the houses are not being rebuilt, thus i am losing population and income.
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⛔Fix for low or no RCI Demand Cities: Skylines residential, commercial, industry tutorial | Guide #7
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Images: Max Vakhtbovych, Charlotte May, Max Vakhtbovych, Max Vakhtbovych