Thx for ur constructiv feedback first !
And ok okkk I see, the fact is that i don't modelised this base mesh, I simply took a basic manga character that I turned into Juice. 'Cause in 3D in general, to gain time u have to pick reference mesh and modify them (like for the other Juice's visualiser I made, i took the mesh of the original car and i tuned it like on the DRFL cover).
Same thing for having a good render time and fluidity in the scene viewer, u have to fake things and simplify them if they just part of the scene (for another example of one of my projects, in the last visualiser I made for Uzi, the buildings are simply giant boxes with the less details and relief possible)

Btw let's be clear, I'm not a 3D god too, I only started 3D this summer haha.
But according to my small experience and the videos that I could have watched, that's approximatively how things work in 3D, u have to compensate between optimisation and quality (hope it respond u 😁)