Pluto TV is free. You don’t even need a Roku box to watch all of their channels including Newsmax.
Newsmax is also available for free on Xumo.
No Roku box needed.
https://www.xumo.tv/on-now/9999194/newsmax-tv
Just signed up for Pluto on my phone, and have accessed it through Prime on my TV. It has a LOT of content...but seems to have no search function. Am I missing something?