Do people actually get an answer on here?

Usually. If they post gibberish they may not get an answer. The better quality of question the more likely you are to get an answer.

Sure, as long as the question can be deciphered.

People tend to post a statement rather than a question or they leave out ALL of the pertinent information. Then they refuse to answer questions asking for more information. They also use nonsense words and misspell so badly that you can't understand what they want.

Are you two mechanics, certified mechanics?

2004 Hyundai Elantra replaced the air mass flow sensor and oxygen sensor but now is idling very strange?

Not anymore after replacing the oxygen sensor and the air mass flow sensor. Now just the idling issue after replacing them ugh.

Try an idle relearn and then go through the steps to complete the drive cycle. Steps for both can be found with a quick search.