I bought this one and ran the wires myself and screwed the cameras in, everything is made to simply hand connect, no tools are needed except for a screwdriver.
There is nothing special about this set and there seem to be many versions of it from different companies and you can do much better but it gives you an idea of what is out there.
ANNKE Home Wired Camera Security System with Audio, 8CH 3K Lite H.265+ AI DVR with 1 TB Hard Drive and 8 X 1080P IP67 Weatherproof Cameras with Dual Light, Human/Vehicle Detection, Color Night Vision
https://www.amazon.com/gp/product/B082C9ZWQJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
who would I hire to install a system like that?
An electrician?
a security guy?