INTERNET PROBLEM, continue crashing

Good evening,For the past few days, I have been experiencing the exact same issue: I keep getting disconnected during games. A connection error message pops up, boots me out of the match, and then reconnects me to the game menus after a few seconds—but it won’t let me rejoin the ongoing match. Because of this, the game has started penalizing me, and my suspension has now reached 2 hours.However, I am 100% sure this is not an issue on my end. While playing, I use the internet on other devices without any trouble, and I can even watch live streams without experiencing any lag. Overwatch is the only application experiencing issues.I have already followed every troubleshooting guide available:
I updated my BIOSI updated my PC
I contacted my internet service provider (ISP)
I restarted my modem/router
I switched from wifi to Ethernet cable and viceversa.
None of these steps worked, so I believe the issue is on your end. I need help!