If you see this message & you are not debugging **[swapper]

I have been having so many problems with my ALL of my devices, that if I ever got to actually use a device without a problem Id think I died & went to heaven!
While having trouble with my other Android echoing & showing fake websites spelled one letter off, someone purchased a Tribute Dynasty for me, which started having similar issues within 2 weeks. I think this was found in developer options?? Or debug? Cant recall but can someone tell me if/how significant finding this notice is?

-Machine Model: MT6750
Swapper [PHY layout
NOTICE! NOTICE! NOTICE! NOTICE!
Swapper ***trace_printk() being used Allocating extra memory **
that means that this is a DEBUG kernel & it is **swapper] unsafe for produciton use
if you see this message & are not debugging **[swapper] the kernel, report this immediately to your vendor! **[swapper]
Interests new_mask :2,
cpu_active_mask :1

(ALSO)

All CPUs started in HYP mode

It just sounds like the phone was rooted\jailbroken.

 

WARNING: The procedure below could make your phone completely unusable, so I would only do it if the phone is otherwise not working:

 

You could try to follow this video in reverse, but I don't know if it would make things better or worse. Note: this video is for turning developer mode ON. In your case, you want to turn developer mode OFF by flipping the Developer mode slider to OFF:

https://www.youtube.com/watch?v=B7ljO34pyqQ

Im sure you would agree... when a consumer makes the CHOICE to jailbrake their personal phone, so they can access features otherwise not available, it Is JUST rooted.
However, if I was given a BRAND NEW PHONE in the (yes) opened box but set up & ready to use with a month of minutes & the receipt dated that day... It would be an intelligent assumption, if they rooted the phone before giving it to me, this person had malicious intents & this would justify if I noticed something wrong, & said this phone is hacked!
Considering Ive had almost 2 years of stress while repeatedly trying to open an online business (obviously requiring my bank & my customers bank info) to no avail! Ive had repeated issues with security & even my searches being controlled, that this falls under more like being hacked rather than just rooted? Would that be the proper terminology?
What can I do about this? Is there a legal avenue I could/should take? I have lost a couple thousand dollars, because of all of this. Not to mention the mental stress! Their family owns a small computer business 2 towns over, that I THINK does IT SECURITY? A group of us went to see the new business where of course I asked some valid questions. The son-in-law made me look like a fool in front of a large group of people, laughing at me, & said I was PARANOID, everyone thinks theyre being hacked, what is so important about me?
Finally, can any tech person tell if a device is rooted?

Is there a simple way to prove my other devices have been ROOTED?

This reads like I wrote it
I was hacked in the same way and I'm looking at my kmsg log showing that message
I'm reaching out for help
I've found this on another forum by someone else this is not random but targeted abuse and human rights violation

I just saw this thread and cant believe the last comment. Ive experienced this exactly but I rang someone to ask for advice only to have an ambulance arrive as they thought id gone crazy. I would love to know what it means. my phone was acting strange so i factory reset and saw this. everynight i plug my phone in and theough the night there are constant changes made to it. apps being downloaded from google play store only to be deleted a few minutes later. changes to accessibility modes, files being sent through google drive. my contacts being labelled, screen recording turned on. I cannot understand how this os happening. I guess maybe google developers having access, Ive found ot impossible to get serious advice on this and its understandable that I have people questioning my sanity. If anyone can advise me what to do in this situation please do. my relationship, my studies and life as a whole has been ruined by this. thankyou