No problem. There’s all sorts of ways to get a design education, and you’re limited to colleges if you’re looking to work somewhere that prefers the designer to have a degree. Of course, a degree is more than just a certificate. The 4 year design college experience does well to develop and nurture a design mindset. You can try with a master’s degree. Whether that’s a better option or not is subjective I think.
If you know the places you’d like to work at, you can be more strategic about how you work on projects and develop your portfolio. Do you have imagery of work you’re drawn to? Post them up here and we can talk about it.
The thing is, designers solve problems. Everything can be improved in some way, especially when you consider a specific user. There are constraints that designers have to work within in order to develop products that are successful on the market. Being mechanically inclined and able to think through technicalities helps with discovering opportunities and resolving problems. Yes, this engineering aspect can be intimidating. However, being able to break out of one’s comfort zone and try new things, seek improvement in one’s own abilities, and being curious for how things work are some valuable traits for a designer to have.