On this page of the Genshin Impact guide, you will find out if you can choose the server you want to play on, and if so how.
The server can only be selected on mobile devices and personal computers. The server selection screen appears when you log into the game client. For PS4 users, this server is automatically selected, depending on the region of your PSN account. It is recommended to play in a region corresponding to your place of residence. Playing in Europe on an Asian server you can experience a much higher ping than playing on a European server. It is also worth noting that mobile and PC users can change the server they play on, but they cannot transfer characters between servers!