Since most of the Newsmax viewers prefer the more conservative take on the news, you can always check out the following...
Real Americas Voice (https://channelstore.roku.com/details/5e1b380d0d963b69b988490cd2a0a488/real-americas-voice)
The First TV (https://channelstore.roku.com/details/e579a40cdbb76f5632f594e519531555/the-first-tv) - Sean Spicer, Bill Oreilly, Jesse Kelly, Dana Loesch, Buck Sexton, Liz Wheeler
BlazeTV (https://channelstore.roku.com/details/dbdbf70da3f29caf398fe1d0d19c1bdd/blazetv) - watch for free via Pluto.
NTD (https://channelstore.roku.com/details/30f108ce82cdc6a592b2642b1b7ab432/ntd-live-tv-and-programs)
------
Most of the above are free on some of the LiveTV sections of the Roku Channel, Pluto, Rumble, etc. Otherwise, they all have standalone free channels/apps. Personally, I choose to watch on Pluto or Rumble with RAV and the First TV among my preferred.
Good thing about streaming is there is always some other content to discover. Also paves the way for another up and coming OTT service to fill the void. I liked Newsmax (more so some of their early personalities), but if they wish to be the next Fox News on cable, so be it.