Currently there are no such programs available in India and it's less likely to be available in India for a long time.

Pro mode

If you can afford the s10 or s10+ then go for it

One ui is possibly one of the best things that Samsung has done for their software and people hate it because they have removed that camera shutter zooming feature and some other minor stuff that's the only reason people hate it

If you badly want it then do it otherwise you'll be better off with the note 8