Recommendations for common pitfalls that nobody talks about [v5]

For context, I am working with a pretty modest budget so high-end suggestions probably will not land. Looking for honest feedback, not validation.

Quick context: I am relatively new to this and trying to find my footing. Posting this here because the relevant subreddit has gotten too noisy lately. There is a lot of conflicting advice online and most of it is from 2019.

There is a lot of conflicting advice online and most of it is from 2019.