It's strange what you report, if you can set aside actual renderings a basic tool like Sketchup can do most you are asking for, it is easy to learn at least bas

It's strange what you report, if you can set aside actual renderings a basic tool like Sketchup can do most you are asking for, it is easy to learn at least basic use (way easier than many professional cad's). It was once a free (and standalone) program (it was for some time bought by google) though now I believe the free version is only "online" (and the other ones have become largely Saas): https://www.sketchup.com/ https://www.sketchup.com/ https://www.sketchup.com/plans-and-pricing/sketchup-free https://www.sketchup.com/plans-and-pricing/sketchup-free Though an "offline" normal program is still available: https://www.sketchup.com/products/pro-classic https://www.sketchup.com/products/pro-classic though at 695 US$ is not exactly "cheap".