Air Serbia Delay Caused Missed Connection (Istanbul-Barcelona)

I blindly bought a ticket to Barcelona (with a layover in Belgrade) from a shady airline called Serbia Airlines. The rude firm left Istanbul with a 1.5-hour delay, leading me to miss my connecting connection from Belgrade to Barcelona. I'm putting this information here so that wise travelers are aware. Do not fly with them; walk if necessary. They profit from uneducated individuals like myself. Save money and book with another airline. They are so indifferent and unresponsive that it is unbelievable. Disgraceful. I awoke at 3:30 a.m., traveled to the airport, and boarded the plane at 7:00. I couldn't sleep that night or the following day. They ruined two days in my life. Disrespectful. Following additional investigation, I identified numerous complaints. They could be doing this on purpose because they dislike Turkey. Do not board their plane.