Ps4 custom controller

[OneHandedSlap]

Does anyone know someone who can make custom controllers besides Benjamin Heckendorn? Im willing to pay for a complete custom right handed controller because i can only use my right hand and ive already tried to contact Ben Heck but he only kept sending me his link to buy the one he's already made, but i find a certain flaw with it and its that you cannot press multiple buttons at once.
If anyone can help it would be awesome 👌