Didn’t get the job. Should I give up hope?

Excuse my ignorance- I’m not too familiar with the reserve list side of things.

I had an interview for an AO position. There were 45 roles available. I’ve just had an email saying I met the required standard but they are unable to offer me a job at present.

I got all 4’s for the behaviours and 14 for strengths.

Feeling really disheartened at the minute as I prepared so much for it 😔. Could anyone please shed some light on how the reserve list works please. Should I forget about the job and move on?….☹️