My guess would be to kinda throw the back end like your drifting but don’t do it too hard or you’ll wreck, also keep in mind I don’t ride dirt bikes I only know that because I’ve seen others do it
due to the lack of a deep berm i'd say you hit it pretty good though you could try going wider instead of keeping to the inside to try and carry a bit more speed through the corner, i'd recommend messing around with both to see which feels faster probably set up a marker on either side of it as well (assuming your allowed to do this there) to make it easier to time the different attempts with the go pro by giving it a clear starting point and stopping point for the timing that it's self wont make you faster but should make it easier to compare techniques to help you get faster, most importantly keep having fun ripping it
When you turn that bike, the force that is in between you and ground is upwards and the only force allowing you to turn is friction, so by tilting yourself a bit inwards will get you through faster than ever because your body mass with the bike will help you turn.
Dont let off the throttle, Faster entry speed lean over into a flat track slide, power thru. Lean way over, Counter steer, Rear wheel ripping! Practice power slides in big circles, Then work on making smaller ones.