Clingy baby!

So my baby girl is 19 weeks and her ideal day is home with just mummy and daddy - plenty of smiles, minimal tears. We both have fairly large families so when we take her to see them I’ll admit she often has people in her face saying hello. She tends to get overwhelmed after a while and often cries. She also doesn’t like to be held by other people for too long, if at all. Is this usual 4 month clingy behaviour? Personality? Or partly due to being a lockdown baby? (We didn’t let anyone else hold her until she was 12 weeks). It makes me sad other people don’t get to see the smiley happy baby she usually is.