Need help starting my 48 Chevy that has been sitting for about 6 months.

Hello Reddit! I’m trying to start my 48 Chevy Fleetline that has been sitting for about 6 months. Only changes I have made since it last started is replacing the ignition coil and the fuel filter. The ignition coil is lower in ohms than the previous one. I topped off the tank and all electrical works including music. I kept trying to turn the engine over and over on and off for the past 20 minutes. Tried so much that the attempts to turn over slowed down and then stopped. Had my battery checked last week and they recharged it stating it had about 6 months life left in it. Fuel is being pumped to the filter so that’s working. Spark plugs look fine as well. What am I missing? Choke and throttle knobs were pushed all the way in but also tried with them out. I appreciate any help you can provide. Thank you!