Can you really shop for clothes online?

Every fucking time I have tried to buy pants or shirts online, I looked at the measurements, same measurements as clothes I already had that fit me the way I like, then when they arrive at my door, they fucking don't fit.

What is this insanity? It's so fucking hard to find clothes that fit me perfectly cause 5 foot 7 and skinny. And they make clothes for fat people or people that like the baggy look.