Servo Gearbox???

Hello everybody, I am making an exoskeleton and I want it to lift as much weight as possible.

Option 1: ASKAWA SERVO MOTOR 400W SGMAS-04ACA2C has torq of 1.27 n / m with a worm reducer nema 34, 100: 1

Option two: A 55kgxcm servo motor, with reducer/gearbox.
https://articulo.mercadolibre.com.mx/MLM-727366875-servomotor-cys-s0650-grande-de-55kg-alto-torque-digital-_JM?quantity=1#position=2&type=item&tracking_id=af276f0b-82a2- 44a4-bba7-f6734abe8f26

I do not have much experience in motors, I want to know if the 55kg servo motor can be fitted with a reducer/gearbox, this would be ideal because it would be lower in price than option 1 and lower in volume, but I have not seen reducers of that type being sold, what do you advise me? thanks.

You might look on ebay for a "servo kit" that has a gear box.