I’m still looking for a good and convenient solution for taking pictures with a “viewfinder” on the computer screen (LiveView) and saving a photo with the click of a button

In April, I already asked for advice on my blog about this. I had an idea to buy some compact Canon camera (most likely G7, G9 or G10) on Avito, connect it to a computer via USB and use standard or alternative shooting software. These fotiki now sell for 2–3 thousand rubles.
Many advised using a smartphone for shooting with an application that allows you to control it via Wi-Fi.
Leonid Kaganov advised the IP Webcam application (its web interface is in the title photo). Everything is cool there, there are many settings, LiveView works, but it’s impossible to “take a picture” by pressing one button: when you click the “Take Photo” button, a new browser window opens with a photo that can be saved using standard browser tools, and then close the window. This is perfectly acceptable if one photo is taken, but when you need to take dozens of them in a row, this is no good. It is necessary that by clicking “Take a photo” a file is created in the specified folder on the computer and a name is given to it automatically, as any camera or phone does when taking a photo, however, the option of saving the photo on a smartphone is also suitable.
Another DroidCam application generally wants 400 rubles for the ability to save photos. How the photo will be saved and how good and convenient it all can be found out only by paying.

The Camera Remote app saves photos only on your smartphone, but can then import them one by one to your computer.

This would be acceptable if the application was working properly. But for me it constantly hangs and stops showing the picture.
Surely there are other applications that work well and do the right thing. Or maybe just some camera applications have remote control from a computer with LiveView (this is also suitable).
If you know of such applications, please advise!
PS Or still buy a Canon G7 for two thousand?