Youtube Video Delisted

I once had a youtube video that was absolutely crushing it. It was generating roughly 3000 views per day for a good 1.5 years. Then in March 2017, which I believe there was an algo change known as "youtube apocalypse", my video dropped off the face of yt. It dropped from 3000 views per day to 300 views per day and slowly kept dropping. Today, it doesn't even show up in youtube search anymore, even when I put the exactly title in the youtube search box. It is also hemorrhaging subscribers due to closed accounts. Is there any way to try to revive this video again or should I just throw in the towel?

looks like it part of the new terms of YouTube.

you have to look at the criteria yt allows to be uploaded and then alter the video in line with yt terms .

a lot of video fall out of yt when changes happen .

it a way yt have massive new top winners .

Maybe you should try to buy some views for it and just wait a while and see what happens