How to go about to reproduce this as 3D model, most logical way?

I try to attach my little model here before it gets out of hand
I was very lucky with the phone app Polycam to scan the most intricate things
so I created this crab like sculpture out of pipe cleaners
Basically it’s three strings that are bent and knotted at centre at one somewhat elongated point
(3due to the three lines to follow)
But scanning seem to be impossible as the edges are fussy. It never works
I know I could go and buy some solid pipe or thick wire
but set myself this goal to TRY to conceptualize it in a classic visual approach.
So I made vertical faces that seem to mimic the leg stretches
and circled for the bodies
For people to walk inside it or on top I thought a 3m diameter would be ideal if not 4m (can be changed later on)
I was wondering what advise help some of you could give me to make the knot with “follow me”?
I also have a hard time always to make a circle at the end of one line with one point only
Usually I stretch a vertical and then a horizontal and make a square then I draw a circle on it .
I am sure there are better ways.
I still can’t figure out how to make things go into the exact direction xyz like with angles etc
what to hold down to make something snap into wanted direction?

CRABbasicGEOMETRICconcept.skp (293.7 KB)

A quick search, for wire, on the SketchUp YouTube Page, should possibly give ideas.

Thank you

You might like to try a plugin called “pipe along path” by TIG - [Plugin] PipeAlongPath | sketchucation