I've actually been working on a project with a motor like this, I used a 12v variation of this one and it was extremely weak (could be just a cheap motor) I could only pull about 6 lbs. I ended up using a winch servo that was rated at 20kg and it was an absolute beast. I stripped off the pot and control board and just used the motor an gear box. It'll pull about 19lbs but won't hold without a controller.

Edit 1: this is the first motor I tried https://www.amazon.com/dp/B07F8TGB9L/ref=cm_sw_r_cp_apa_fabc_XQGeGbQ8CG6N4?psc=1

Edit 2: this is the servo I actually used https://www.amazon.com/dp/B07HNTKSZT/ref=cm_sw_r_cp_apa_fabc_zSGeGbZX7JKME