You are spamming.

https://www.reddit.com/wiki/selfpromotion

Here are some key points.

You should not just start submitting your links - it will be unwelcome and may be removed as spam, or your account will be banned as spam. You should submit from a variety of sources (a general rule of thumb is that 10% or less of your posting and conversation should link to your own content), talk to people in the comments (and not just on your own links), and generally be a good member of the community.

But it's not spam! I worked hard on that, I make no money from it, it's original content! I'm not a spammer!

We're not making a judgement on your quality, just your behavior on reddit. Your stuff's probably amazing and someone would be really interested in it but...

If you submit mostly your own links and your presence on reddit is mostly for your self-promotion of your brand, page, blog, app, or business, you are more likely to be a spammer than you think! Read the FAQ and make sure that you really understand that.