How am I supposed to open up to my boss that I am deeply raged because I witnessed a new coworker got a raise twice in a year and takes 300% more than me and got a bonus of 1000$ for finishing the year while I have been loyal to work for 6 years and got zero benefits or bonuses?

I wanna tell my boss about it. I am gonna be looking into other jobs and I'm not in a critical position but I feel so down about this situation that I can't look at their faces anymore and at the same time I wanna get my point across without sounding pathetic or rubbing favours in their faces.