Front flips are a bit different than back flips in several key ways.
First, just jumping straight and tucking will not cause you to front flip - it will make you cannonball. Jumping straight is still important but you have to bring your hips up over your head or you will not rotate (different for front lays, but let's hold off on that).
Second, you will want to use your arms to assist your rotation. They should already be up when you are about to take off for the front flip. Throw your arms like you would throw in a soccer ball (i.e. evenly and extended, but not straight to the ground).
As you are rising and beginning to bring your hips over your head, bring your arms to your knees and tuck in tight.
Now, front flips are a bit different than backflips in landing - In a backflip you see the ground halfway through - this is not the case on the front flip. You will not see your landing until after you land (this is often referred to as a "blind" landing). Do not look at the ground or try to rotate until you see the ground - you will either (a)over-rotate or (b) not elevate enough and land low.
Try it in order:
(1)run
(2) hurdle/skip while bringing your arms up
(3)while looking forward or slightly above horizontal, jump high
(4)bring your hips up over your head while throwing your arms like you'd throw a soccer ball
(5) tuck and grab your knees
(6)open as you begin to get right side up again and see in front of you.
(7)brace your legs for landing.
Best of luck - train safe.