well linkedin, you can also find mailing lists try to first look at people from your country/close people idk try to invite a 100 business angels on linkedin

well linkedin, you can also find mailing lists try to first look at people from your country/close people idk try to invite a 100 business angels on linkedin with a small intro message like "hey, I'm X from Y, we do Z, we have N users with X revenue, looking for a small investment, would love to chat about it"