Coaster brake question

You can’t actuate a coaster brake with a brake leaver/cable, if that’s what you are asking.

You’ll have to install a normal, hand actuated brake and brake lever.

Apart from coaster brakes there are generally two types of brakes: Rim brakes and disc brakes. For rim brakes your frame will need rim brake mounting points and your wheel needs a rim with braking surface. For disc brakes you need a frame with disc brake mounting points and your wheel needs a disc brake hub.

For brakes with cables (i.e. not hydraulic), cable stops welded to the frame would be nice but a continuous cable housing works as well.

It’s quite likely your frame has mounting points for rim brakes. If you are lucky your wheel also has a rim with braking surfaces.