What phone should i buy?

Hello everyone :D

I have had a Huawei Nova 5T since jan 2020
it has been, and still is, AMAZING
issue is that in the last full year it has massive issues with both internet connection and bluetooth
me internet provider's not the issue cause my parents have the same and they don't have any issues
while the bluetooth is a complete nightmare, expecially when trying to have a phone call while driving or trying to connect to headphones/speakers ( i use speakers a lot for my job )

so, since i am going for a 3 weeks trip at the other side of the world in less than a month, i kinda need a reliable phone to not find myself on the wrong side of japan
and since that trip litterally costed nearly everything i have, my budget cannot exceed 400€

my main interest is something that works and is smooth, a good quality camera to take pics during that trip is a nice plus but my Nova still takes quite good pictures so it's not essential
but than again, i don't use my phone for a lot besides WA, doomscrolling and playing Dokkan, so i don't really need a super-mega optimized processor so if the bulk of the money are going to the camera for something very good, it can convince me

brands i don't like are oppo and xiaomi, i'm not very fond of the pixel phones but i'm open to them if they are fine

thanks in advance for all the feedback :D and have a nice day :D

edit: from other sources a lot of people recommended the Pixel 8a, how does it sound?