Why is it too small on a 15'' FullHD laptop in Ubuntu, but fine in Windows?

Question

Monitors

Got a lenovo laptop. Put ubuntu and was horrified. Scale 100%. Everything is very small. Sites are small. The windows are small. Eyes hurt. It feels like they just stupidly reduced the picture from a 24 '' monitor to 15 ''.
Installed Windows. The scale is also 100%. Immediately just MUCH more adaptive. If in ubuntu 1000px fixed site occupies 50% of the screen in the middle. Then it’s already 80% and, accordingly, it has become much more convenient ..
How can I achieve the same on ubuntu?

Answer 1

Setting the scaling factor to 1.25 in gnome-tweak-tool helped. Thanks to Ezhyg for the tip.
PS: however, some texts remain small anyway, and the windows themselves are not scaled. Font only. But okay. And so it goes.

Answer 2

different font sizes

Answer 3

Is the resolution set the same?