I used to love this manga but wtf was that

I hate it when a manga that i’ve been following from the beginning has weirdly abrupt pace towards the ending :’) what’s with that last chapter seriously??? I had to scroll down and checked if the page order was all messed up, or could it be that some parts are just missing? (I’m tryna cope T-T) but if that’s really how it is then that last chapter ruined the whole manga ngl, at least for me