Hackers put my trust on check

So today I got in a match with two hackers in SA servers (which is where I play). It is quite a rare thing to be fair in here, as I have played for over 5 years and besides this episode, I only recall seeing someone "hacking" once prior to this and I also can't be 100% on that previous case.

The worst part of the already ######### situation (them taking the game hostage and stuff) is that, after the match, I found that one of them had left a comment on my profile. In the game, they both had the icon that indicates they're from a different platform, which I guess was Epic since they sent messages in the post game chat as well. Still, I had a message sent during the match in my profile by someone with a name just like one of the players on the lobby. This was the thing that put a sour taste in my mouth and made me close the game.

I always keep the privacy settings on to have some peace and avoid griefing and stuff, since we know all sorts of people play this game and sadly quite a lot tend to be very toxic. Realising that regardless of that, someone had access to my username and thus profile, put me really off. I had the belief that when the game said "your name and profile won't be shown", they meant it. I had a false sense of trust that I was to an extent secure, but now I highly doubt that.