Urgent: cPanel server management failing post-update with relentless Apache crashes, totally stuck here!

Okay, I'm at my wit's end here. Just updated cPanel on my dedicated server – a standard update, nothing fancy – and now my entire server management setup is completely borked. I've been pulling my hair out for the last six hours trying to fix it and I'm getting absolutely nowhere.

The main issue is Apache. it just keeps crashing. I get 503 Service Unavailable errors on all my client sites, then it comes back up for a bit, then crashes again. It's like a constant cycle of dread, completely destroying my server uptime. My clients are blowing up my phone and I'm losing money with every minute this thing is down.

Here’s what I've tried so far:

• Restarted Apache multiple times (`service httpd restart` and through WHM).
• Checked Apache logs (`error_log`, `access_log`) – seeing a lot of "AH00052: child pid XXXXX exit signal Segmentation fault (11)" and "server reached MaxRequestWorkers setting, consider raising it" messages, even though traffic isn't that high.
• Ran `yum update` to make sure all system packages are fresh.
• Ran `cpanel update` again, just in case something was missed or corrupted.
• Checked disk space (`df -h`) and memory usage (`free -m`) – both seem okay, not maxed out.
• Looked at `dmesg` for any kernel-level errors, nothing obvious jumping out.
• Tried rebuilding Apache configuration via WHM.

I'm seriously stuck. This is impacting my business big time. I've always handled my own server management but this is beyond me right now. is there some common post-update cPanel server management pitfall I'm missing? Or a specific log file I should be digging into that might give me a clearer picture? Any help would be appreciated, feeling pretty desperate over here. Thanks in advance!