Can you make offers on a property that's on MLS without a realtor?
No. If it's on the MLS the seller has already agreed to pay a certain percentage to the listing Realtor. You can find a buyer's agent to represent you or go through the listing agent. Sometimes using the listing agent gives you a better chance at getting the property. Depending on the agent they may give a slight discount on the comission to get both sides of the deal.
Looking at a way to put in multiple low offers daily. I know that allot for a realtor.