Just got a Desert Rose. The nursery was unable to provide information on care. I have done the basic research for watering, light, fertilizing, but struggling to find anything definitive about how to care for the browning leaves. Have done extensive search for any sign of pests, rooting, but not seeing anything. Can I trim just the brown off or should I cut off entire leaf? The new growth is starting to brown as well. Do I need to prune the stems? Could it be potting issue?
I apologize for all the questions

just new to working with more difficult plants and really want to see my Desert Rose thrive! I have uploaded a couple of pictures to references.
Thanks for any and all help provided!