Oh man this is going to be a really important lesson for you to learn: you do not need to be more competent than others, or even more competent than average, in order to run a community about a competency.
The skills involved in running a community are not the skills the community is about. Being able to moderate and encourage discussions which you yourself cannot dominate is a super important leadership skill.
If the idea seems attractive to you, do it.
But also be realistic about your time. It could be you don’t have time to start, shape, and run a new community.
That doesn’t mean you can’t spend some time identifying others who could run it and then selling the idea to them.