Well you've come to the right place.
IF you could be a little more specific?
Some information regarding....
How you came to have Windows 10.... did you buy a computer with it pre-installed, did you upgrade from a previous version of Windows to Windows 10?
How long have you had it?
What kind of machine do you have, laptop, desktop, tablet, 2 in 1??
What kind of horsepower does it have..... processor, memory, storage, available space, what kind of video adapter do you have installed?
Have you tried a clean install? Have you tried a repair install?
OR
Did you just want to tell us.... how bad Windows 10 sucks?