Hello @honarparvar
I really don't like putting my picture on social networks. They could steal my spirit! I'm Joking!
Obviously, in my resume, it is necessary to place a presentable and well-dressed photo and your advice are very good for a good profile picture. But normally I don't put photos in my profile because I'm an introverted person.😜
Thanks for sharing 
you are great and you are too right! after all it's a matter of personal priorities and preferences. cheers