Why is it so hard to find an affordable car? Any advice?

I'm a first-time car buyer and trying to find something now that I officially have a driver's license. I'm mainly thinking about mid size sedans like a Honda Accord. However, everywhere I look whether at dealership websites or Facebook Marketplace, the car prices are no good. I very fortunately have down payment $, but still want to get a vehicle where my monthly payment isn't crazy. Ideally 200-300 dollars a month.

I'm looking at used cars but want to be assured that it is in good condition, not ancient, and has reasonably low miles. I know it's a lot to ask for, I guess, but I want to know that the ultimate decision I make is the right one without getting an unaffordable car payment.

Do you have any advice?

Also, if I ask my bank for a loan their interest is actually lower for getting a car from a dealership and higher from a private seller like on Facebook. So it might be in my best financial interest to go the dealership route.

Why is it so hard to find an affordable car? Any advice?
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