How to make this curved object from solid one

Hi so I was trying to recreate this handrail from Pinterest, but I don’t know what tools or which plug in that would help me to make the module from solid up-straight one to become curved and rounded like this.

Thank you so much, an explanation would be much appreciated

Eneroth Upright Extruder

Hmm… what about the rounded module on the body part… I was trying to do this part…

Use Flowify extension and YouTube search for tutorials

Okay thank you so much!

I will try the plug in and see if it works smoothly like how it is on youtube.