Monitor recommendations

@puzzlezaddict 

Thank you for your response :-)
The laptops screen itself is broken, so right now i am using our LG 55" OLED tv as screen, but i am to far away from the tv, to see smaller objects.

I started with looking at 4K monitors because i want clear/detailed images, but became uncertain if i would actually get that resolution with an older computer sending the content to the monitor itself.
I checked last night in screen settings on the computer, and the highest resolution i can choose is 2560x1400, but then all shown content on the screen became tiny.
I am aware that the refeshrate on the LG monitor is high, but a lot of the 4K monitors i looked at, had 60hz which i know is in the low end.
My laptop can go up to 144 hz, but i noticed when tried to change to resolution 2560x1400 in game instead of screen settings, the hz then lowered to 60 hz. But again for example the "manage worlds" page became smaller than usual on the high resolution.
I live in Denmark, and the 2 stores i went to only had 27" screens, but i think i might prefer 32" simply because i "only" build in sims, so i am often focused on a certain area of the screen, and i would like it to be as big as possible, but i know many would say it is to big?

I was planning on looking more in stores, but my worry was, that i would find a monitor that i think shows great images, and then come home and it then would look bad, because my computer is old and doesn't send out 4K quality pictures.
(Sorry i'm trying my best to explain in english haha)