Other than PH, what other platforms can be used to promote products?

For startups, ProductHunt is the best platform! In June, I launched on Producthunt and got the #2 in the daily ranking, which brought me 1.2k UV and 3.4k PV. I'm still looking for some other platforms to promote my product. I just launched on Microlaunch today. Hope to get your support🙏 https://microlaunch.net/p/linkedcrm What other platforms can be used to promote products? Please leave your suggestions in the comments.😊