Well not to go into /a/ territory but the biggest thing wrong with FRANXX was the second half of the series was the rushed pacing and lack of focus, character development etc that has gotten people hooked in the first 4(?) episodes. Why did the second half suck so bad? Cause there was supposed to be a second season and the first season was supposed to be about episode 12-16ish content wise but stretched to 24 episodes. But then the producer told them no second season and so they squished the entire second season into the last half of the first season and jostled the content about to fit. Best explanation is that Kill La Kill is the formula Trigger works with: Buildup in the first season, hit them with the whammy in the last episode, second season builds off of that and all the stuff. Now imagine Kill La Kill without a second season and all that stuff is squished into 8 episodes in the first season and all the stuff in the last 8 episodes of the first season was squished somewhere in between and that's basically what went wrong with FRANXX and BNA. Again, it's always the producers that do it and usually while breaking the contract terms as well.
Also I liked Beastars. That shit better get a second season cause the Manga has some really good moments. there's literally a moment where a small mammal is into IRL vore and wants to be eaten