I got an old-timey 8 camera WIRED system just for this reason. 160.00 for the 4 camera unit with a 1TB HD and you can get extra cams but I just got two complete units so as to have a backup.
It’s a pain to route the tiny coax but I don’t care. It carries dc power for the cams and the video signal as 1080p NTSC. brand is SANSCO on Amazon
You can also get systems that use CAT6 cabling and do POE so the CAT6 carries the power for the cams and the video feed.
Mine's an old-timey 38 special along with a 357 magnum and some 12 gauge OO Buck shot along with 30-06s, 30-30s, 22s, 45s and thousands of rounds of lead filler.
I have a basic alarm system and I will call 911 after the smoke clears..."I feared for my life and I want to call my lawyer" and not another word.