Can you still deposit to your account even if a haven't deposit since last year?

yes, as long you maintained the minimum maintaining balance, a bank required, there will be no bank charges deduction on your account, because 1 year of no depositor/s transactions means dormat account.

If, minimum maintaining balance was not met, then your bank charged you of dormancy, then your account might be closed, and you cannot deposit any.

Ask your bank about your balance.