Should I combine 2 of my pages for SEO?


I have a question. I'm trying to arrange a page for the keyword "sexy cowgirl boots". I have a site (https://wehearthandmadeboots.com/womens-cowgirl-boots/) and I don't even register in the top 100 for this or any other keyword I know. I have another site (https://wehearthandmadeboots.com/rhinestone-cowgirl-boots/) that I tried to rank for "Rhinestone Cowgirl Boots" and it ranks 13th and 10th for the first keyword " sexy cowgirl "boots". The keyword "rhinestones" has a larger monthly search volume.

Would it be advisable to merge the pages? Maybe leave the rhinestone page and add the content from the beginning? Or should I leave both of them alone? I'm not sure what else to do when it comes to SEO.
SEMrush

Any ideas, comments, advice would be greatly appreciated.

Thanks a lot,
Thomas