Set the Instant Pot to saute mode.
Add the olive oil. Heat the pot for 2-3 minutes.
Add the onions, minced garlic, and ground beef and saute for 6-7 minutes.
Stir often.
Turn off the saute mode. Add the salt, stirring as you add.
Pour in the chicken broth, scraping the bottom of the pot.
Break the noodles in half. Layer them in a crisscross pattern in the broth.
Pour half of the marinara sauce over the noodles.
Sprinkle basil, oregano, garlic, and onion powder on top of the marinara sauce.
Put the lid on, turn the pressure valve to seal, and set it to cook for 2 minutes on high pressure.
Next, do a 5-minute natural release and complete the process with a quick release. Remove the lid, and add the remaining spaghetti sauce.
Toss well. Set it aside for 5 more minutes.
Sprinkle additional seasoning over the prepared spaghetti.
Serve hot.