There are many sites out there that offer you the opportunity to submit your article, but you do have to read the fine print before you sign up and give up your full time job.
There are some that allow you to submit your article, and they will pay you for it if they like it and think they have a use for it.
There are some that offer you a cut of advertising dollars when you submit your article, but they don't pay you anything upfront.
This type of site usually does not pay off for you. You may earn very little money for your trouble.
If you submit your article for money, be very sure that you know what are the rights you have.
Some will offer you a choice to retain or give up the rights to the article content by additional payment.
Often, it might come down to how much the article means to you or if you think you want to use it again.
You can easily find online publisher that you can submit your article for consideration, but be very sure it's a reputable and proper site before your submission.
Never give anything away for free unless it is to promote another venture of yours.