Should you quit? Probably. Should you start your own company? That depends. What's your background (beyond "I only have 1 year experience in programming")? Do you have any contacts with people who would potentially want your services, or do you think that you could make them quickly?

My suggestion would be to keep the job solely for income while you hunt for another one. Ask questions during interviews like "What tech stack do you use?", "What version control do you use?", "What kinds of workflow automation do you have?"