I have a FirstBIKE without a handbrake. Is it possible to buy a brake and mount it on the bike?

I have a FirstBIKE without a handbrake. Is it possible to buy a brake and mount it on the bike? main image I have a FirstBIKE without a handbrake. Is it possible to buy a brake and mount it on the bike? image

Unfortunately, it is not possible for technical reasons – it would require replacing several components, including the rear wheel, and drilling into the frame.