Is manually finding where your audience is online a pain?

Hey everyone,

I feel like talking to users is always a big thing. Of course it is really important. But when i have to find where my users are, that seems a bit manual. Because if i have like a vague idea oh there on LinkedIn, i will be spending my days cold outreaching. While if i want to find where they are specifically that takes a lot of manual effort, forget the outreach itself. Does anyone relate or is this just me?
Thanks.