This post seems f4ke. Someone over 30 should be over what others think.
But if it is real: youtube and other social media tend to fill our recommendations based on what we look up. So if you look up those types of videos, more will show up.
Yeah in life, it's funny because at first we go looking for something but then eventually it comes looking for us.
What you can do on the youtube recommendations, first turn off history, THEN on videos with negative stuff, just click the three dots on those video thumbnails and "Do not recommend this channel" or "not interested".