You are correct. If your employer included meals and lodging reimbursements in your W2, you are being taxed on the reimbursements as you cannot claim a deduction for them as an employee.
If you are getting a 1099-NEC instead of a W2, then you would be able to claim the expenses.
You could contact your employer and ask for a corrected W2 that removes the expense reimbursements from your box 1 taxable wages.
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