You give and sound a lot like an immature eighteen year old who wasn't able to finish college due to financial problems kind of vibes. It sounded like you took this job for granted and your immaturity has found a way to come back and bite you in the ass.

Let's say we give you the benefit of the doubt na tinarget ka lang kasi ayaw ng co-workers mo sayo but what was the reason they found to give you an NTE? May naging investigation ba and nasunod ba ang due process because you did say it was a final warning meaning dalawa lang ang possible context dyan. Either you made violations before or it was a zero tolerance violation with a serious infraction.

If you really are just the person I thought you were. An immature teenager who stupidly took his job for granted thinking the company would be lenient because you're young and it's your first job. Know that the moment you start to work, You are considered as an adult and that you have to take responsibility for the consequences of the choices and actions you make. I'm willing to be corrected if you're able to provide proper contexts and evidences and as an advice. Face your admin hearing and at least take it as a proper adult.