I have a friend who has a Sony Xperia X F5121 with Gmail v184.108.40.206199545 on Android 8. Every time he replies to a message in his Gmail app, the app replaces the word "Re:" with "השב:", which is the Hebrew translation for "Re".
When he replies from the Desktop Gmail, then it replies with "Re:", so it only affects him when he uses his phone to reply.
The official support suggests changing a language setting but his Gmail's settings simply have no language settings. The phone in general is set up to use Hebrew, and he doesn't want to change that. Is there a way to keep it as "Re:" or - if necessary - change only the Gmail app into English without affecting the overall phone?