How do I fix my Drone that won't lift off?

Check all the props for damage and debris around the shafts(string and things like that). Other than that make sure you have a fully charged battery

I had the same problem after switching my propellers out, my drone (X5SW) didn't want to lift and kept tilting to the right. After some searching I found that if you don't have the propellers in the right sequence, that you're not going anywhere. I switched the props to the picture on the box and low and behold, I'm flying again!

On a lot of these toy grade drones if you get hung in a tree and the transmitter is still throttle up you are going to burn out something. I had issues when I was new to the hobby, so I feel your pain.

recalibrating the gyros WORKS follow the directions

"If the motors are spinning up, it is likely an issue with the flight controller or ESC's. Have you tried calibrating the gyros? Turn the copter on and place on the level surface, I believe it is both sticks down and to the right (might be left, varies from manufacturer), hold and watch the LED's on the bottom flash, once the flashing stops it should be calibrated. I have seen that happen before after taking a crash. If the gyros don't agree with each other it won't fly.

Do the motors actually respond to the throttle up to point? Meaning you can spin them up and down a little bit just not enough to take off? Or is it just spinning in Idle when you turn it on?

Also, I'm not sure if it was a question or just a comment, but you should always have 2 motors spinning clockwise, and 2 counter clockwise."

Props are marked A and B. Make sure they're mounted on the correctly marked arm of the quad. Recalibrate the transmitter