How to stop fairphone switching to the wi-fi hotspot with stronger signal?

Help Fairphone 4
,
1

There are 2 wifi hotspot in my dorm. Let’s call them Alpha and Beta.
Alpha has stronger signal, but I want to connect my phone to Beta sometimes,
since my computer is connected to Beta, too.

I store the password of Both Alpha and Beta in my phone.
When I manualy switch to Beta, my phone switch back to Alpha automatically in seconds.
(I have turn off the auto-connecting of the network.)
My previous android phone will not connect to the other hotspots if I manually choose one.

Is this a android 13 feature, fairphone feature, or it only happen to me?
Does anyone know how to fix this? (without forget the wifi. input password again is annoying)

2

Could you instead save the password(s) for one or both hotspots in a file somewhere, & copy+paste it when you need it?

3

My worst solution is to make some scanable ssid QRCode.
Hope there are other solutions.