Most of these remotes you can buy on aliexpress without the tv-box. NEC remotes work, MCE remotes should work out of the box. I use a sony remote from a old DVD-player and my previous one was this one: Universal IR Remote Control For Android TV Box H96 MAX/V88/MXQ/TX6/T95X/T95Z Plus/TX3 X96 mini Replacement Remote Controller-in Remote Controls from Consumer Electronics on AliExpress
Search for "tv box remote" on aliexpress.
Ok thank. I hope already in my country.