I have a similar build and similar body fat percentage.
I don’t tend to notice a significant weight loss from exercise, but I do look a bit skinner/healthier - muscle weighs more than fat.
The only way I lose weight is by dieting, not exercise. But the exercise makes me feel better/happier/stronger so you do both :)
Consistency is key - 3 months you are just getting started if you are coming from zero! From a similar starting point I found it took about 6months of daily exercise before I felt significantly different.
Keep at it is my only advice, don’t sweat the protein measurements you aren’t at a level it matters. Avoid take out, eat reasonably well, and do at least 1hr of cardio or strength daily and you’ll get where you want to go.
Even on the windows side you are better off with the 1st party defender features these days.
Enterprise use 3rd party AV for central orchestration and control. Theres no reason for this in consumer land.
The threat detection isn’t meaningfully better across any of them (aside from some being “astonishingly bad”) despite what vendors claim.
The best people to know how to protect your OS are the people that made it.