The sheer amount of content out on youtube is overwhelming. The suggestions might be personalized to your like by youtube but you still get bombarded with videos or channels on your page that you might have no interest in. Also this personalization requires you to login.It's also hard to block channels you don't want to see from popping up on your webpage.
This small extension called BlockTube on firefox helps in blocking content on your youtube page by.
Video title , Channel Name , Video ID , Channel ID
There are other advanced options too.
