Suggestion: we borrow the INBOX concept, that you might have a lot of different email folders, but you only have 1 INBOX. Remove the tab design and a few years later, if needed, add filter function or tagging for those who have too many stuff in INBOX and wants to look at specific activities.
I like this approach. I will upload new designs tomorrow. Studying Facebook, Instagram, Linkedin, banking apps and how they deal with notifications.