Ticketmaster offers no alternative to your smartphonw
This might not be news to everyone, but since 2021, they stopped offering an alternative to the app. You can no longer print or screenshot the barcodes because they roll.
https://news.ycombinator.com/item?id=40906148 <-- And not for any reasonable technical reason either. It's purely a policy/interface thing. If can wrap your head around the tech, that person figured out how the codes are generated, and made a web page that could make them (without cracking or 'stealing' an unpaid ticket)
Just stop using TicketMaster or going to LiveNation shows. It sucks missing out on some artists, but small venues offer 100x better experiences for a fraction of the cost anyway
Choose your venue / whatever. I. E. I was visiting NYC and went to watch the Yankees. So I search for the Yankees, and my ticket shows up. It will show their fancy barcode thing in the browser and it works just fine.