1981 Dodge Mirada Starter

Engine Mechanical problem
1981 Dodge Mirada V8 Two Wheel Drive Automatic

I think I need a starter but I am not sure, I charged the battery fully overnight and went to start it and it turned the engine at proper speed but it wouldnt start then when I let off the key there was a sound like a fan is turning and if I try to start again while that is making the noise it makes a grinding noise. After about 4 tries the engine started. Do I need a new starter?