shut the hell up. If you ignite tryn while he is ulting he ALWAYS dies after even if he trys healing. The only thing that can save him is if a healer happened to save their heal just for you.
Try playing tryn before complaining. In ranked tryn is quite easily one of the hardest champion to use. Mainly because everyone knows they should burst you and make you ult. Then they ignite you and ignore you. Only champion harder is most likely attrox. All his skills eat percentage of his hp and they are both melee brawlers
If tryn didnt have undying rage exactly as it was all that would happen is him walking up and feeding all match. The way he is set up is intental and its his only way of playing. I never engage a fight with him without ult because i know he cant do it. Simple as that. You can get killed by anything if you refuse to compensate in your play stay to work around the mechanics of other champions.
So basically UNDERSTAND he is going to use his ult. THEREFORE dont do anything that would easily allow him to engage you.