How do you find low comp keywords in high comp niche?

I employed some well known methods like alphabet soup and PAA to gather low comp keywords in my niche but so far gathered only 10 keywords in which I can potentially rank. I don't know how I'm gonna find 100+ content ideas with this much scarcity of low comp kw.
Can you share some of your unique kw research methods please.

This is one of my favourite methods:
https://www.blackhatworld.com/seo/method-find-extremely-low-competition-keywords-for-free.1405852/
I also use forums, reddit, quora to find easy keywords.

praetserge said:

This is one of my favourite methods:
https://www.blackhatworld.com/seo/method-find-extremely-low-competition-keywords-for-free.1405852/
I also use forums, reddit, quora to find easy keywords.

Click to expand...

Yeah I gathered kw from quora