Ranking Gets Drop Day by Day

Add fresh content then add niche edits and strong pbns you should recover and start doing this now because valentine day is not far

You should focus on the quality of back links. Check your competitors work by different tools and do better.

Seasonal niches are different than normal niches as most of the big competitors don't bother to enter in off season and you find yourself at a satisfying position but when the season is close the aggressive campaigns start and as they have ranked backlinks in serp they are on the top.All you need to do is just find good keywords for your backlinks and increase quality backlinks.

Also try unique things like trending product articles or images for valentines some services that most other competitors don't do.Try adopting all the positive aspects from your competitors and you won't be disappointed.Maybe you find an even crazy thing to work with in future.

Giving quality and interesting content is one of the way which can help u out in this.