Angular developer require

Angular developer required to fix the following issues in an Angular website

node : 14.17.3
npm: 6.14.13



1. In Arabic version
sign in / sign up page
social login
If you back to website without login
site changes to English version itself.

I found, if you refresh page, it changes to english itself.

2. In entire website, in any forms dropdown button
---> Selected option in red background itself,
we are unable to change its color