How to Automate my Duties as Content Creator

Hey everyone, I am looking for improving the efficiency of some rutinary work as content creator at The Water MBA platform. How can I use Make for certain works? Or maybe another tool would be more suitable?

  1. May I automate that once I post in Linkedin, automatically the same post is shown in Instagram and Youtube? (same video, same text,…).

  2. How may I schedule an automated newsletter linked to the leads reception through my current website done with wix.com?

These are mainly the two most manual time consuming works, and I want to focus on other added value, due to this is a side-hustle project and my time is limited.