This is not specific and you'll find many different ways, here are some concrete ideas.

Growing by streaming only is not beneficial when you're small, I would suggest to not focus mainly on streaming

Usually to reach the top of anything you have to repeat it so much you become insane, this could mean be really entertaining, be a GOD at playing a videogame, or be good at any other skill outside of those 2, Example. Like you're into fitness and know a lot about it that you could create content out of it.

After knowing what you want to do next is to make constant Tiktoks, Shorts and Reels [ IG/FB ] and drop youtube videos on the same channel where shorts are. These have to be consistent, Like you might not upload a day or might skip that next video upload. What matters is that you're consistent with the topic and slowly build the habit of constantly uploading videos/tiktoks

After you're consistent with putting content out there, one of the smallest way to network is to find creators that do what you do and sometimes just replicate what they do, and sometimes you might even collab with them. The idea is that you become known within their community [ not by self-promotiing].

This can be done on all socials, you can network on all socials and while networking.

Next idea goes in hand with networking and also putting content out there. You'll usually find questions and doubts other people have and you can make content targeted for these people [ This helps a lot as in the beginning you might not know what what videos to upload ]

One thing that you can do with your twitch, if you're small. Just use it to record videos for downloading later to edit, but never let twitch be your main focus when putting content out there.