First work on dynamic flexibility then follow it with static.
Understand the difference between the two and then consistently do dynamic first followed by static
Dynamic flexibililty is essentially any movement that involves the full range of motion for a particular body part (or parts) without holding . Example a shadow squat is a dynamic stretching exercise. Some people when they do this particular movement do go through the full range of motion this limits their flexibility. It is a dynamic stretch when you go down then back up with out a pause. Try to go through the full range of motion.
Static is when you stretch and hold.
The key to developing flexibility is sequence and consistency. Like I said first do dynamic then follow it with static and do this daily.