It seems many people are confused about the meaning of introverts & extroverts. So introverts attempt to act like an extrovert especially during work due to the social stigma. Being quiet, shy or spending a lot of time at home does not mean one is an introvert, Similarly being able to talk a lot doesn't necessarily means one is an extrovert.
An introvert is one who by choice prefers to be in the company of a few friends or alone & feels happier doing so, while extroverts are those who prefer the company of many people. Introverts get their energy & recharge by being in their more private world.
An extrovert is one who is more outgoing & would prefer to have more friends to hang out with rather than stay at home. Extroverts derive & recharge their energy by being in the 'outside' world.
Colleagues find me strange as i don't often hang out with them especially during lunchtime. Being frugal is a reason as i like to eat alone as i can control my meal expenses instead of spending unnecessary in the company of others. Finding a seat is easier for a lone diner too. Another reason is i prefer time to be alone.
There happens to be quiet spots beside the railway tracks (now dismantled) near where i like to go for lunch. Occasionally i'll rest here & have some quiet time & watch the train pass by before heading back to the workplace.
I'm not the only one who likes peace & quiet time. Look at the hammock & the rattan furniture.