I don't use IG enough to fully understand their ads, but I think the ads are well integrated on Facebook and TikTok, and also well-targeted. I regularly click on ads and buy products from TikTok. There are tons of offers I get to test out advertising at a huge discount on both platforms which would be worth someone taking advantage of to see if it fits your niche. On Facebook you only need some text and an image, but on TikTok you would have to go to the trouble of creating a video, but you could pay someone from Fiverr if you didn't care too much about the quality (which isn't a huge issue on TikTok as lower quality can often come across as more authentic).