Hello,
i continued to try to restore it,
i didn't find how to fix the old electronic circuit
so i replaced all with an ESP32-CAM and a L298N Motor Driver
and used a ps4 to control it with a ps4-eps32 code found on GitHub : aed3 PS4-esp32
it is working , but i have a lot of bluetooth deconnexion of the ps4 pad, not easy to fix