Fighting with my boyfriend

I’m a emotional wreck, bc I don’t know how to fix my relationship I’ve been with my boyfriend for 2 years and we fight heaps. I feel it’s my fault all the time bc i get angry when he doesn’t answer my messages or calls he plays xbox a lot, and maybe it’s a jealously thing bc his attention is on the Xbox most of the time and his mates, I need to control myself how much with keeping my cool and not cracking it with him. Please give me some good tips