I am not an accountant nor do I provide tax advice. The following is what my accountant did for the 2022 tax return.
Schedule C
Principal business is Internet sales
Accounting method is cash
Compute the gross profit or loss
exact receipt are not needed unless you get audited
Schedule 1
Enter the profit or loss from schedule C
Compute the net income/loss from schedule 1 and enter that number
on 1040 line 8.
In summary you should be able to deduct losses and reduce your tax liability or if you made a profit in will increase your tax liability