Tired is one of my favorite songs of hers.

Don't come for it like that.
Nothing on 21 feels like filler imo. I used to think He Won't Go was until I listened to it in full. Lyrically, it's one of the best on the album.
19 has a lot of filler though. Not "filler" as in unimportant or added for the sake of adding it, it's just a lot of the songs were not that strong.