More than 30 years old, haven't found a partner. What should I do?

Nowadays, online dating is very unreliable and it is easy to encounter online scams. Young men and women who are a little more stable are often introduced by blind date, colleagues, acquaintances and friends, which is called marriage promotion. But the situation now is that there are more men than women, and girls are very picky about choosing a spouse. I hope the man has a commercial house, a car and a stable income. If the landlord meets these conditions, blind date is still very easy.