i had the same issue following my last ACL surgery.
I still have some issues after hard workouts but i work on that leg 2x a day. Like Shane said, i found the couch and samson stretch with the distraction to be huge. Shane’s description is exactly what i do also, but i i’ll do a couple things first: I found that in my instance in particular, the satorious trigger point spots are the hottest for me and doing contract/relax with a supernova or foam roller is near immediate relief. That and tack/floss my hamstrings gets everything moving smoothly when i move on to the banded distractions.
In addition to all of that i extremely limit my sitting during the day. That hindered my recovery a lot following the surgery