The best advice I can give is to not worry so much about what other people think and to be patient.
It can be difficult to not compare yourself to your peers, your colleagues, your formal classmates, etc, especially in a world of social media and other outlets where it can seem like everybody is "more successful" in some way. I spent a lot of time very early in my career worrying about how I was being perceived a lot, versus focusing my energy on being the best version of myself and gaining confidence through experience. That's not to say that you shouldn't be concerned with acting professional, but it can take a lot of energy trying to meet all the same benchmarks as your peers or worrying about being at a certain place in your life early in your career. That energy can be better spent trying new things, stepping outside of your comfort zone, and forming meaningful relationships inside and outside of work.
Patience is also so important early on in your career. It's easy to forget that the most successful people often put decades in before they got to the level they're at today, and to get impatient. The most successful people have grown into their confidence because they've taken some risks, experienced various roles and setbacks, and have learned from their mistakes. You'll learn so much from your first few jobs, but will never stop learning and evolving as a person and a career person. remaining patient and focusing on both short and long term goals can help you achieve your dreams!