If I take screenshots everything is fine and they are sharp in my gallery but if I send them or upload them somewhere they get blurry, I think that's because my phone screen is bigger than the average, I have the Huawei p20 lite
Can someone help me there you can adjust somehow so that the sharp
On the one hand, as you say yourself, can be due to your screen resolution, but often simply depends on that you, for example. In Whatsapp can't send the complete resolution, because it would be too big, so it is automatically reduced in size.
It depends on the format in which the image is stored. An original screen capture would have e.g. The ending BMP. A lossless (!), Data-reduced BMP has the extension PNG. A JPG or JPEG file is data-reduced and not lossless, which is why all contours are blurred.