No crank no start, just click?

I was parked while the car was idling. Then the car just shut up. I thought the battery was just dead, so I tried giving her a boost. They did not both I had to get it towed to my mechanic where he said that the grown wire was an issue, and he had to replace the battery. He said that he also put a new starter however, after that, I drove back, but on my way back home, the car started to lose power when I accelerated the day after I'm on my way to work. The car stalls I started and try to get somewhere where I could park, but there was noise from the engine and whenever I put my foot on gas, it would lose power and it stalled afterwards it would not start all I heard was click prank and prank I took the battery and I charged it. I tried and the same thing happened to drain the battery. The car hasn’t been starting since.