See these previous discussions:

https://www.researchgate.net/post/How_to_increase_the_citations_to_my_published_research_papers

https://www.researchgate.net/post/How_do_I_increase_the_number_of_citations_for_my_paper

https://www.researchgate.net/post/How_I_can_increase_cite_my_articles

https://www.researchgate.net/post/How-to-increase-my-citations

https://www.researchgate.net/post/How_to_increase_the_citations_of_your_sole-author_or_multiple-authors_papers_published_at_the_Renown_Journal_in_the_field_of_your_research

https://www.researchgate.net/post/How_the_citations_can_be_improved_of_research_papers

https://www.researchgate.net/post/What_are_the_methods_to_increase_the_number_of_citations_of_my_articles

https://www.researchgate.net/post/How_to_increase_citation_of_article

https://www.researchgate.net/post/How_can_my_article_citations_increase_from_zero_to_hero

https://www.researchgate.net/post/How_Citation_can_be_increased_in_view_of_h-Statistics_for_a_Scholarly_article

https://www.researchgate.net/post/How_to_increase_citation_of_an_article

https://www.researchgate.net/post/How_do_i_increase_citation_of_my_research

https://www.researchgate.net/post/How_important_are_citations_Are_they_overrated

https://www.researchgate.net/post/The_power_of_keywords_and_audience-centric_papers_Reflections_and_thoughts_on_number_of_citations_publishing_and_highly-impacted_journals

See also:

https://www.researchgate.net/post/How_do_you_increase_the_visibility_of_published_article

https://www.researchgate.net/post/How_can_I_make_a_previously_published_article_book_or_book_chapter_more_visible_and_accessible2

https://www.researchgate.net/post/How_to_increase_the_visibility_of_our_research_articles

Make a LinkedIn post, if you have followers. Post it in a relevant group. My impression is that about 10% will download your paper, sometimes fewer.

Making a movie presenting the material on Youtube and then post it on LI, is an other.