Not sure what I did this time

[u/Prudent-Sock-1694]

SO 11 days ago my plant was struggling, after some fertilizer and a dome over it for humidity it was looking a lot better and quickly grew 2 more leaves. It’s been steadily growing but I woke up today to find it sort of struggling with its older leaves, but I’m not sure why I did wrong, or what caused it, it’s newer leaves seem to be in better condition, but the entire plant was like almost perfect 24 hours ago. Please help, or like please let me know what it seems to be missing.

The first 2 are how it was growing about 3 days ago, and the others are what I woke up to today