Ryanair complaint: Damage

I was unable to check in for my flight online. I tried to do this during the day, but the attempts were unsuccessful. We arrived at the airport early, so we could check in online if possible. It lasted for a very long time and as a result we were late for boarding. Although we arrived 20 minutes before departure. At our request to influence this, as it was not our fault – the maximum the airline did – replaced the tickets with a surcharge of up to 600 pounds. I have a large family (my wife and 4 children). At the airport they told me that they would pay 50 euros for one suitcase, but I said that we paid much more for them. I was told that I had to fill out a form. But when I tried to fill out the above form, the program blocked me. I have contacted RyanAir several times regarding compensation for my damaged luggage. But only Bots answer me. I will add a photo of the luggage. If you need any details or photos of tickets