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Hiiii..............28% spam score is high but don't worry. Check the links on your site to see if there are any low-quality links, if any, remove them to reduce the spam score.
Google will not penalize you just for this score, but will ask you to improve your ranking.

Hey,

I understand your worry about your DA is decreasing day by day. It's unlikely to be a bug, but rather changes within your site or external factors.
You can Check for any recent changes to your site's content, links, or technical issues. These can affect your DA. Also consider external factors like changes in your backlink profile. Do not make back link from spami website.
For more information you can check this website
https://www.monsterinsights.com/domain-authority/top reasons to learn python

Hey,

as par my opinion sometimes clients have their own priorities. If your client is fixated on high Domain Rating , natural methods like creating great and unique content and earning quality backlinks are your best bet.
But if they want quicker results, you could explore paid options like sponsored content or influencer partnerships.
For more information you can visit this website - https://www.quora.com/How-do-I-increase-the-DR-DA-fast-in-a-monthtop reasons to learn python

You can check the domain age with this website.
1 https://archive.org/
2 domain age checker