Expiring Classified Submissions for do-follow backlinks good for SEO or bad?

Hi guys, so last month we created about 60 do-follow backlinks for Classified Submissions. All the websites had a low spam score and a DA >30.

Unfortunately most of the links have a 30 day lifetime (as mentioned by those websites) and therefore the links will expire in a month's time.

I have a few questions with respect to this situation :-

1. Should I be spending so much time on classified submissions every month?
2. Would recreating the same backlinks on the same website before the expiry day help?
3. After the backlinks are gone, would it drastically affect my rankings? Is there any other alternative you guys suggest?

I would really appreciate the help. Thanks!

submitted by /u/dunjin_master1
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from Search Engine Optimization: The Latest SEO News https://www.reddit.com/r/SEO/comments/pfrb9f/expiring_classified_submissions_for_dofollow/>