This symbol has been found in cave paintings and engravings. There's been different interpretations of what it is, but I now know what one of them is:
It is the energy formation in your body when correctly performing the Mula Bandha tantric exercise.
(https://yogainternational.com/article/view/a-beginners-guide-to-mula-bandha-root-lock)

The three lines correspond to the root chakra, the solar plexus and the neck/throat. Alternatively the middle one can be the abdomen. The bent lines are lower desire-based energies, which I've seen for a long time and been trying to handle.

More things that now make sense: the lowest curve is lust, this is mainly a problem for men. The upper curved line is greed, this is a problem for women. Ganesha is the hindu deity of wealth, he is associated with the throat chakra. According to myth he had his head cut off and developed the head of an elephant. I believe this to be symbolic of giving up greed by "cutting the throat" as in cutting away greed.
It also corresponds seamlessly with how lust and greed are treated among the catholic seven mortal sins. They also seem to be the core energies of all relationship issues today manifesting as the gender issues and feminism/incels.

Really interesting to see it fall in place like this.