What is the most affordable and reliable indoor security camera?

I have 3 Tapo cameras at my vacation home that I bought from Amazon. They are indoor cameras and you control them with the app.

Ive been using them for a year and they work great.

I use the Blink cameras both in and outside of my house and have been pleased with them. And they are fairly inexpensive.

We had a security company supply and install them. I think we paid $40 per camera. You can get these cheaper at Lowes or Home Depot and do it yourself also.

You know, I have no idea how many of us here have tested out a whole mess of systems, but I think perhaps the best thing might go to your nextdoor app if you have one, and ask what is the best system anyone on the app has used, is using? I surely did get good answers asking there for roofers, plumbers, handypersons, gardeners, and asking folks about internet systems, computer repair folks, best printers and so on.
I hope others here have used systems they like and can recommend.
Best of luck.