Hello, can you recommend a software that helps with introductory/demo app videos?

you can try smartcue https://app.getsmartcue.com/

I am looking for something for more like youtube editing, which would allow to add subtitles, doodles and infographics to the video

You can try Berrycast just to record video and screen share. But for editing you can use Filmora or Canva. Super easy to use!

Maybe you can give it a shot to colossyan.com