It all used to be algorithm based, so watch a few of those kind of videos and it should serve you more of them, though some oddities will always rise up to the top.
my kids sadly watch it and it’s all absolute nonsense with kids from influencer families basically promoting toys.
the songs and oldies are there of course, just do a search.
you can block complete channels, though it’s pretty pointless as there’s 10 more channels like the one you blocked!