should I continue in .NET or should I choose MERN [closed]

I am 22 year old working as a .NET developer in a product based company. I want to make my career in full stack development. as I am working now on .NET should I continue this and make a career in development using .NET or should I switch to another technology like MERN/MEAN? which would be more helpful for me for the future. If there are any other technologies that have a more brighter future what are they? can anyone pls give me some suggestions regarding the scope of the technologies that I have mentioned above and also pls let me know if there are any other technologies which have a very good future. Thanks!