If you have your own pic of yourself, you can use that as your "Avatar/profile pic" but some people are shy that way.

Okay, first you need to do is look up in the top right of your screen and you will see settings
pic1user setting.jpg

From there, you will find on the left side: Edit Avatar
pic2 settings edit avatar.jpg

After you click on edit avatar, you will see this (Note, I have this forum set for 150x150)
pic3 edit avatar.jpg

https://www.makeuseof.com/tag/make-c...easiest-sites/ is a site for making your own profile pics/avatars

Or you can follow my search here.