Tips for new creator

Hello! I made a account for content creation again I used to be a content creator but it was a while back so idk what changed so far, what tips would you give for 2026 to a beginner?

According to my research it's, more posts = more reach?

Other than that I'd appreciate if anyone can guide on hashtags?

And idk about alt text on posts if I should add all the keywords on description? What would be better?

Thanks in advance!!