16 weeks havent felt any baby movement , is that normal ?

yes

I didn't feel any until 18 weeks exactly! Same day I found out the sex 😂 it was an eventful day :)

yes...

I didn't feel anything that early! It depends on baby's position! I really didn't start feeling anything until 20 weeks! It was later than most people but perfectly normal and baby is healthy!

I didn't feel any movement until almost 21 weeks

yep I was past 20 before I felt anything and then it was just little flutters

I started feeling mine at 16 weeks!