Artist / photographer Niche

Hello! I am a photographer and I recently started my business. As I was building my portfolio and started to get clients we moved to a new location / different country. I am in the process of registering here and working on my niche. I have developed experience in portraits, family and entrepreneurs (I photograph images for their website, social media, print, etc.). Up to this point I’ve done work on what would be my ideal client and this has helped me understand what they value. However, I don’t know if this is truly a niche in which I can sell and market too (only based on values). Do I need to pick on area like family and find a niche within? Do I need to first start only in one type of photography like portraits and work from there?