new topics in dotnet

hi

 

I am working in product base company which is using very old technology in dot net  and now I want to switch to move ahead in my career whenever I go for interview they ask me question about MVC angular  and other latest topics due to which I got rejected , when I try to learn these topics first thing in any video tutorial is you must have knowledge of other topics . like I am trying to learn angular js it is been said on tutorials I must have to learn javascript first and I  am not good at javascript and now angular js has many versions like MVC have many versions  I am seriously confused what to do. I just stuck at my career. please help me