Something like 10 months ago, this was my bathroom's condition: mold on the ceiling because I used to take showers as long as 50 minutes with hot water, which made the room full of humidity rising on top, thus forming mold slowly

And this was 2 months later. Although I started limiting my time in the shower by at least an half of the original, the mold still kept spreading.

And this was yesterday. 1 month ago my parents used a product to get rid of the mold, and yeah it worked but... Was it a bit too aggressive? Or is this the damage accumulated over time?