Hello again

I need your help with one thing, i bought the 14T since november 26, 2024 (according to me) and in the first four months everything’s good, but, is in this month of april that the problems come, you will see, after i change the country of my phone to have the HyperOS 2 update and after i installed the update in the past days i used my phone as a normal perdón, but, unexpectedly, my wifi connection was dissapeared of my phone (by that I mean the wifi icon disappeared), in this thursday i tried to reset the wifi settings, i tought that everything was ok, but it turns out that no, now, if i want to connect to my house’s living room wifi, my phone randomly set the connection to the second flor wifi, in addition, My phone keeps disconnecting from the internet, is there any other solution that i don’t tried