I’m in my 2nd year of playing and I want more range.
2 years playing the trumpet is a very SHORT amount of time. There are reasons why you don’t see high music in band. 95% of second year students would injure themselves working on range.
You should buy 2 books and play from them every day. The first is Clarkes Technical Studies . For the second book the complete Arban . Your local music store will have both.
Work on putting air into the horn and using very little mouthpiece pressure.