I use PlusUi Theme in my blogger and my problem is when i embed video from youtube to my blog post and then youtube thumbnail i automatically shows in my hope page with HD Quality but when i open any post and scroll down to related post. why it shows related post blurry. other posts are looking good and high quality but only footer side youtube embed video thumbnails shows in related post looking like blurry . please help me how to fix blurry related post

I’m trying to remove the bullet points from the lists in the widgets on the sidebar of my Blogger blog.

First of all, I’m not good at coding. And English is not my first language. If my explanation confused you, I’m sorry.