I would literally reach out to linkedin groups that surround this specific topic or go to a college/find college online and email departments (not spam - don't do that) - if you ever decide on one or join legit groups for all of them. This is a good way to find students eager to get resume credits or publishing credits. If you're by a college, print out a piece of paper and put it on a bulletin board and say 'want publishing credit on ________. cow - call us here, we pay ______ and give you author credits to help build your resume'.
In my opinion, I would really avoid any freelancers now a days UNLESS....you vet them thoroughly, they don't charge like 2 bucks for an article or they have no articles or portfolios. It's honestly not worth even hiring freelancers anymore in my opinion though. It's about finding the right tool to write it for you or to brainstorm with - then improving it and spending (depending on your WPM) 30 to 45 minutes rewriting parts, cutting bad or non-factual parts away and adding value. Boom. Done. PLR products really do suck. They all look like 2005. For me, back in 2017 or 2018, they all looked like crud. I just put them all on a storage device and put it in a bag in my closet. Was going to use as lead magnets when clickfunnels first came out and they couldn't even get downloaded. If you wouldn't buy it or read it, don't buy it or write it.
Lastly, with all of the AI tools out there, write it yourself. Then use perplexity to add source data and enhance the quality and factual nature of your writing. Quality of an article is just not as important as getting it published, seeing what works and doesn't and this is also really niche specific. Being in the YMYL niche, you better have an outline with keywords and actually be factual and relevant - google don't play with those niches and you won't see results just having a 100% ai article published. OR find your niche and go to physical businesses that offer it. Go to a gym and ask someone lifting lol or seriously, the college way is the best way. One of my more guerilla marketing type of strategies. Interesting facts? Literally ask gpt to give you 50 urls that show 'interesting facts' or train a model on a database large enough to encompass your niche and all about it - then just retrieve data from it.
Goodluck writing. Remember, perfection is the enemy of progress.