Pull-up bars for the door jamb are by far the easiest solution.
They're uncomplicated, and the bars can also be removed easily and stashed somewhere out of the way.
Adjustable Bar Length
The Joy Fit has an adjustable bar length that fits in door frames ranging from 65 to 95 cm.
Its hand grips are made of high-density foam, for comfort.
It is ideal for a variety of activities such as Workouts, Fitness, Chin-ups, Hanging leg raises, and other exercises. It aids in the strengthening of the major muscles.
Wide Use Apart Just Pull up
Wide-grip pull-downs, both heavy-weight and high-rep sets, are the best way to increase pull-up.
With eccentric pull-ups, where you 'jump' to the top and slowly lower yourself back down.