I haven't experienced this with my macbook (Early 2015 also running high sierra), it's been stable. (but why isn't it possible to sort video's based on size in

I haven't experienced this with my macbook (Early 2015 also running high sierra), it's been stable. (but why isn't it possible to sort video's based on size in the photo app or icloud photo webapp?..) With my iphone se it's a completely different story. Decided to contact Apple customer support because my iphone was frequently freezing up in the past weeks. Got told I need to replace the battery for 30euro (which to be fair is a decent price), but the battery still seems pretty good to me and the phone is less than 2 years old.