My character feels over powered to other players at my table.

For context I’m playing a battle master fighter with pretty reasonable yet solid physical stats( we roll for stats at our table). We just hit level 5 last session and have 2 fairly new players (me being one of them) We have a scout rogue (also newish), a beast master ranger as well as a sorcerer and an artificer. Last session I played my character exactly how I felt I should. Used action surge early and maneuvers when i felt necessary whether for damage or reactions(I also crit twice which helped). Rogue felt my turn and reactions took forever, which is fair when you attack 4 times but it’s what the class is designed to do. My character killed 6 of the 12 enemies and 2 in the first turn. We’re getting to a point where new magic items come about and rogue suggested to dm that “fighter is op and doesn’t need them” I asked for a ranged attack since it was something I lacked and that was my response. I then offered to help rogue understand sneak attack better as I had access to a PHB and she declined, stating “there were no opportunities to sneak attack in that combat”. I don’t think I’m min maxing because my character is really the only one who excels and close range combat, Ntm the other characters don’t do well in close range. I feel like it’s more of a disparity in characters specialties than anyone feeling more powerful than the others. I’m not trying to be an asshole here but I did feel a bit hurt when it was brought up. I feel like a fighter should excel at combat and especially in this party. Do I dial it back on combat? Is there something I need to say?

Edit for more context and addressing some questions: first thing to get out of the way, rogue and I are VERY close, and dm is one of my best friends. Socially this makes things easier in some ways but more difficult in others.

This is rogue’s 3rd character in 3 campaigns and my 3rd in 2 campaigns.

Statwise we all have at least an 18 in our primary stat. My character doesn’t have a stat below 10 but only stat above 15 is strength at 18. Rogue has 18 in dex which is worth noting. Stats feel balanced around the table.

Rogue would admit that she is less invested in the rules and books than others in the group. BG3 kicked off my game knowledge and was tremendously helpful. She is definitely mislead by the verbiage of sneak attack, I was too before it was explained better to me.

In this combat we were ambushed on a boat so limited space and everyone had enemies around them. Rogue even had a net thrown on them for 2 turns which definitely made things difficult to get sneak attack.

Im planning on helping rogue get their character down. I just hope she’s willing to take the help, but there has been a discussion in a prior campaign about trying too hard to guide her in combat (that specific encounter would’ve been a turn-based TPK if I hadn’t said anything, dm specific stated it) . I really don’t want to tell people how to play their characters but I am honestly just trying to help her in her experience.