I use the Note 9 stock messaging app on my Galaxy S8.
I get the blue messaging app icon no more ugly yellow chat bubbles and it actually has a lot of really cool features/fixes
I used textra for the longest time but from the phone app if I click message instead of call it brings up the Textra Square Reply Window which I asked them to make an update to have an option of turning that completely off and the automated reply said thanks for feedback or whatever.
(there's a way to turn it off and use Android inline reply which I have done but that reply window still comes up a lot which is annoying as hell)
Now if only the Gif compressor could actually not speed of the gifs before I send them that would be great
(for now I need to use an app that makes the Gif under 1200kb that's the only fix unfortunately)