A well written commit is a concise summary for the changes in that commit. If you commit small and commit often you can summarize your changes in a few words, staying consistent with your team is key.
If you are using a package manager like npm, yarn or pnpm you can specify the package manager you are using in your package.json file. This is useful for tools like Github Actions and for your team to know which package manager to use.
Reviewing your own pull requests can help you catch bugs and improve your code quality. You are probably stupid. Help yourself catch your own mistakes early.