Forget a showreel. You need EXPERIENCE and TRAINING. Showreels are what you create FROM your paid acting jobs and you haven't had any. Which is why several of us have asked what actual spoken acting experience you have...
I'm not in the business, but my partner is an actor. This is what he did:
Aged 13 - got into AmDram
Aged 15 - 18: did O-level and A-level Drama
Aged 18- Went to a well reknowned theatre school for a Diploma in Acting whilst also getting involved in the National Youth Theatre
Aged 21 - on graduation, got an agent, joined Equity and from then onwards worked as a professional actor, entertainer, comedian, singer, magician in a number of shows, TV, films and.....get this....he is still struggling to find work, not because he isn't talented, because he is fantastic, but because the industry treats people like shit and fails to respect actors like my partner who have put in the effort to get qualifications and experience.
Oh and he does have a showreel - I did his latest one for him. We had to cut out about 20 years of his experience to get the 5 minutes that Spotlight wanted.
About 25 years ago I decided I wanted to be a sports physio. I didn't know anyone who was a physio, let alone a sports one so I did my research (not just asking on an internet forum - though to be honest there wasn't anything like MN then). I did my sports science degree, then I did my physio degree (as physio degrees were starting up then) THEN I got lots and lots of experience. No one going into a profession like mine would assume you can just jump in and get a job with no experience and training - that would be insane; and yet, every year, loads of people think that because they've been an extra in a TV show once they are an actor.....dream on.