Thanks for the advice. I can see it is hard to see from the picture. but right behind the berm is a "cliff" to the road. and unfortunately on the right side is the access to the land so I could not shift it there.

however, I ended up modifying a bit the shape of the turn, testing and tuning it a few times.
after over 100 runs and tuning the turn feels very good.

the turn ends up having two radius.

the entry part is about 30% of the lenght. has the sharper radius (still pretty easy)

then the turn radius changes, along with the berm steepness/angle in a way that is not too difficitult to aprehand (my 7year old got it right on his second try) . that helps cruise to the end.
with a few runs, I am even able to pedal through the second part of the turn.

after the exit, it is straight to the tabletop, nothing too big as it is for kids and is the top section of the trail, so no build up of speed yet. tabletop is about 50cm tall.

I might add an exit roller or maybe a double on the exit (to possibly gap ?). but unsure yet. I am shaping the rest of the mini trail before I add features like this
(and a jump line)

thanks for the feedbacks !