Avoid doing "quick fix" changes (like removing some page element because you heard it was terrible for SEO). Instead, focus on making changes that make sense for your users and are sustainable in the long term.
Consider how you can improve your content in meaningful ways. For example, rewriting or restructuring your content could make reading and navigating the page easier for your audience.
Deleting content is a last resort and only to be considered if you think the content can't be salvaged. If you're considering deleting entire sections of your site, that's likely a sign that those sections were created for search engines first, not people. If that's the case for your site, then deleting the unhelpful content can help the good content on your site perform better.
How long does it take to see an effect in Search results?
Once improvements have been made, it may take time to see an effect in Search results: some changes can take effect in a few days, but it could take several months for our systems to learn and confirm that the site as a whole is now producing helpful, reliable, people-first content in the long term. If it's been a few months, and you still have not seen any effect, that could mean waiting until the next core update.
Remember that changes you make to your website are not guaranteed to have a noticeable impact on search results, and positions in Google Search results must be more dynamic and fixed. Google's search results are dynamic because user expectations evolve, and the open web constantly changes with new and updated content. This constant change can cause both gains and drops in organic search traffic.