Wanting to adopt internationally‼️

My boyfriend & I are wanting to adopt! Preferably internationally but we obviously don’t mind where. We are planning on getting married & already have a little one. She’s almost 4 months old. I was just looking for advice on what to expect. Would an agency consider us based on the fact that I only bring home around $700 a month because I work part time so I can watch after our daughter but my boyfriend brings home around $2500 a month (currently) but he’s looking into going into the police field. What requirements would they want from us? Anyone who has adopted or knows anything about it, please let me know:)