Very sorry to know of your trouble. Unless you were in an area that was declared a natural disaster area---like a wildfire area, you cannot deduct the loss from the fire on your federal tax return. The tax laws that changed for 2018 and beyond eliminated casualty losses as a federal deduction.
https://ttlc.intuit.com/questions/4482873-which-federal-tax-deductions-have-been-suspended-by-tax-re...
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