Well you must not spend must time on Snapchat, my friend. Literally 50% of the app (the pane to the left) is
only your friends. If the content is bad for you, then that is a you problem, not a platform problem. You can't even scroll your IG feed for more than a few minutes (at most) without an ad or "Sponsored Content".
Personally, I actually even find some of Snapchat's "For You" section useful as well — I usually only see stories from NYT, WaPo, or other news/informative content providers. The ads are surprisingly avoidable, and much less prevalent than Instagram.