One-Minute Shorts Production Training

I want to learn how to create 1-minute shorts for social media platforms. I have several questions for which I'm seeking answers:

1. Where can I find topics for the latest gossip?
2. How can I build a 1-minute story based on a gossip topic?
3. Where can I find images and videos related to the gossip?
4. Which software or online platform is suitable for converting text to audio in Hindi?
5. What is the cost of converting text to audio, and are there any free options available?
6. How can I create subtitles from the audio?
7. Once I have audio, subtitles, images, and video, how can I combine them? Is there any online platform or software available, and what is the cost?
8. Also, I want to mention my channel's name on each video; how can I do that?
9. What is the best video resolution size and quality for YouTube Shorts, Instagram Reels, etc.?

Thank you for considering my queries. I'm looking for expert guidance to learn the process on my own or with your help, if it fits within my budget. I need immediate guidance, so please only respond if you have time available.