@a7b014600755 - you may want to find someone local to help you out.
first, if you were due a refund, the deadline to claim that was within 3 years of the original tax filng deadline, so for all the years prior to 2019, the deadline has passed.
for 2019-2021 - you can still file to obtain a refund. Depending on your income level, the local VITA and AARP organizations would do them for free during February - April 15. you can google each organization in your local community.
