What did I do wrong should I have said more than just “hi” ?

Bascially we share the same gym whilst it was closed I added his insta and we spoke a little

seemed turned off due to my age. Seen him at the gym first day it re opened today and we exchanged an awkward quick hi as he was using the machine next to me then we never speak again, even tho he was working out beside me but I seen him talking to the staff who are also genuinely his friends and they looked over as though they where talking about me, the guy he was telling looked surprised and he was smiling… but then he never speak to me again

What did I do wrong should I have said more than just “hi” ?
What did I do wrong should I have said more than just “hi” ?
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