Well, a lot of opinions about AV and "cleaners" for Macs. I can't speak to cleaners as I have never used one and have never had a performance issue because of not cleaning. What I have read is it is not necessary but again, lots of opinions on this.
AV is even more controversial. I have Norton 360 on my wife's M1 iMac and it runs fine. On my MacBook Pro, it drove temps up at idle and did the same on my Mini so I no longer use a third party AV. Macs do have some built in protection against malware but nothing can guard against human error and no operating system is safe from malware, if malware exists for that operating system.
I have never heard of the AV product advertised on the site you referenced and I have never seen that product reviewed on any AV reviews online. That's not to say it is not a good product, just that I have not heard of it.
If you want an AV product, I would suggest doing online research on MacOS antivirus products and choose one. There are excellent reviews out there for both paid and free products.