Which hacked version do you use? I've seen a few floating about, but am leery of them.You can't block suggested posts. I chatted with the developers once on their discord and they have no intention of letting you block them.
What I do is sideload an older version of a hacked Instagram apk. It doesn't have the features like instaprefs of saving videos and all the new app stuff but for simple feed browsing I get a pure feed with no ads or suggested posts. then I used instaprefs Instagram when I need to download or use stealth.
Really wish they would just clear suggested posts on instaprefs. Suggested posts might as well be ads. I use insta to see what my family is up to, not randoms. Tiktok is for endless scrolling random peoples content.