Retire by 2030 with BTC

So, ideally how much BTC one should own now to retire by 2030 ? I understand retirement is subjective and depends on the lifestyle one wants, but to me retirement is just being able to be fully in control of my time, living a decent life, nothing too luxury. A wife, few children (3 atleast) be able to provide for them, take care of old parents, have atleast 2 cash flow buisness.

Just to give an idea, currently, where I live, earing $800/month, ofcourse not nearly enough, but not too bad either.

Thanks in advance, for all your inputs.