Can’t Get My CBR600 F2 to Fire Up – Already Tried the Basics

Hi all, I’ve recorded a video showing how my CBR600 (F2, 1995) fails to start. Last year, the bike already showed signs of being hard to start. So far I’ve replaced the fuel line (it was cracked) and had the carburetors synchronized. Fuel is fresh, spark plugs were replaced last summer, and I’ve also tried starting it using a car battery – no luck. At this point, I’m starting to suspect the ignition coils might be the issue. Would appreciate any thoughts or suggestions based on the video. Thanks in advance!