Yikes!
A browser that comes with JavaScript disabled in year 2019? Well done Samsung 
Maybe this link from Samsung on how to enable JavaScript in Samsung Internet Browser will help.
If you are worried about other users who may be having the same issue and wouldn’t know that they need to enable JS in their browser, then I believe you’re in for a quite a few fallback workarounds because AFAIK most themes break down in one way or another without JS.
Best wishes!