Sounds like you've got a great start! I agree with others that you need some professional experience (though that's easier said than done). If I was hiring, I would be putting you more in an internship role from the sounds of your projects (though they may be more intricate than I believe they are).
The best thing I ever did for my career is to build myself a resume website. From your experience it looks like you may be interested in backend development or data science. With a website, you can showcase your work in a user friendly way. If things are written out in python you could use django or flask as a backend so the scripts will run without much conversion. This way you can hand in your website url with your resume and they can play around with your work. You shouldn't have to learn more than a bit of html and css to make it look half decent (or go big and maybe find a love for frontend development) but you would learn if you like backend for sure.
I really like django for beginners and still use it for large scale projects professionally to this day. It helps with some of the database abstraction as well as has easy templates and great docs. Go try it out! Whether you love or hate it, you'll learn a ton and hopefully end up with something nice to show future employers. The downside to django is it is a little harder to deploy for a beginner but I'm sure you can figure it out (learning docker is big in web-dev too). If you don't want to run your work (just want pictures of results) at first you can just make a static site (only html, css, and javascript) and host it on github pages as well. Having some way to display your work is better than most people have.
Last suggestion is to learn git if you haven't. I always like to look at peoples GitHub page to see their projects. This is another easy way for you to display your work, and that you would be good to work with. Frankly, it sucks to work with people that aren't very accustomed to git and it's best practices. You can also feature your resume website on your GitHub so not only can they look at the pictures, they can see how you did it too!
Keep in mind this is all from a full-stack developer so I may be a bit biased on the website, but everybody likes easy access to see what you can do. Have fun!