Can I get a feedback on this issue please. I just filed my late tax returns for 2018 FOR 2019 Tax Year but I Kept getting question for 2019 and 2020 ?

If you were filing 2018 it is for the 2018 tax year.  Did you submit it?

Online is only for 2019 returns. If you actually submitted and filed your 2018 info online you have a big problem. It thinks it was for your 2019 return. Now you have to wait until the IRS Accepts or Rejects it. If it Rejects you can change it around to be for 2019 and resend it. BUT if it is Accepted then you need to wait for the IRS to fully process your return and you get the first refund or pay the tax due. Then you can fill out an Amended Return 1040X. So if you have filed DO NOT change or enter anything else into your return until you find out if you have to amend.

Again DO NOT CHANGE or enter anything into your return if you already filed. You will have to start the Amended return with the original return that was filed. How to amend 2019
https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577