screen damage

I currently own a MacBook Air released in late 2018, and I do not know for whatever reason there are these straight horizontal lines on the bottom edge of my screen. I am new to this server so I do not know how to upload an image here. But essentially there are 4 think horizontal lines on the...

I have spotted this inconsistency at the bottom left corner of my monitor, it has been there for a while, the strange thing is that it follows the pattern of windows 10's task bar??? (type here to search and a hollow dot with a black outline at it's left) I'm sure it is from the monitor, I have...