It is common to see passwords as plain text over post request?

I am new to web development and don't fully understand how encryption on the web works. I was messing around with Crome Dev tools on the site hltv.org. I noticed when I log in it sends a post request to /login with my password and username visible in plain text in the body of the request. Is this information visible to anyone who could intercept the post request or is only visible to me? Do I have a misunderstanding of how the information is encrypted in https requests?