Can’t find a match / server issue

Hello so currently I am stationed in Japan and trying to get in a match online but I can never find a match or it takes 45 minutes before I get in one is there any way I can change my server to play in the U.S? Or am I just gunna be stuck and have to wait until I hopefully can get in a game

Are you playing on Series X/S? This is an issue with those consoles and 343 are yet to give any feedback on it:
https://www.halowaypoint.com/en-us/forums/e0d9938206f04a598ce84f2c8cadce02/topics/series-x-halo-5-performs-poorly/c191f8be-a87e-4d4a-b3dc-1085be7121a8/posts