You can be the youngest person on the shift and still be the one everyone trusts with the keys.

Trust goes to whoever has proved reliable, and reliability has no age requirement. Turning up when you said, remembering the dull things, and not needing to be checked on adds up faster than most people expect. Being younger makes it more noticeable rather than less. The people deciding who to depend on are mostly tracking who has never let them down.

Pick the small commitments you keep making and make them properly for a month. Be where you said, finish what you started, tell somebody when you cannot. Volunteer for one thing that involves being counted on.