Engine dead, need help getting new one
 

I have a Toyota Camry 1999 with a 2.2L 4 cylinder engine. A few days ago the car had trouble accelerating. When you stop, you had to floor the gas pedal to get to 20 mph. Once it was accelerated, however, it ran fine. Yesterday my dad took a look at the car to try to find the cause of this issue. He checked everything but still couldn't find the cause. After he took it for a test drive (he isn't allowed to drive due to current circumstances), the engine just stopped. He had to leave the car parked about a block away.

Can anyone help me find a reliable online retailer?

Also, does anyone know if it's ok to manually push the car about a block back to my house parking? Don't really wanna do towing for such a short distance. But if I can't leave a car parked in a public parking spot for a certain period, I probably won't have a choice.