Crime writers; how do you research crime scene details without your internet history looking like you’re planning to kill someone??

I’m just starting my first serious crime novel with a serial killer as the main antagonist - I’ve done a few short stories in the past but had an idea for a full length novel that I want to investigate. With all of the algorithms and cookies meaning everything you do on the internet is being watched, what’s the best way to research making my crime scenes realistic without feeling like I’ll get a knock at the door from the local police because I appear to be planning a murder? I haven’t settled on my serial killers preferred method yet, and considering having multiple different methods as he finds what works for him. I know I’m probably just being paranoid.