Custom domain with SSL on AWS EC2 with multiple apps – Amazon Web Sevices

I’ve been extensively researching about this on the net and I could not find any result that matched my case, forgive me if this is a duplicate somehow.

So, I have an AWS EC2 instance running multiple apps on different ports. For the sake of this example let’s say that I have a Node server at 3001 and a Python server at 8001, both applications are dockerized and I already mapped the ports (so 3001:3001 and 8001:8001).

After deploying those apps and make sure that they worked fine, I bought a domain that already comes with a SSL certificate.

My question is: How can I use an URL like https://api.mydomain.com/node to my node server and https://api.mydomain.com/python for my python server? And yes, I need HTTPS since those are acting as APIs, so a client need to hit those endpoints and browsers blocks HTTP requests from HTTPS websites (I have a static app that uses https://app.mydomain.com)

The solutions I found were things like creating a load balancer and generating a certificate using AWS, or use NGINX and generate a certificate using OpenSSL, but I already have the certificate and – in my mind at least – this should be as simple as saying something like "Hey reverse proxy, use this domain and listen to 443, but if you receive a /node go to 3001 http port and when you receive /python go to 8001 http port"

I honestly don’t know much about AWS load balancer and even less about NGINX, so I need some help where I can simply config this right, so I can create the subdomain on my DNS provider and point to the EC2’s public IPv4 and then the balancer/proxy will handle the forwarding job (I am guessing).

I am preferring a free solution, since this app is just a personal project and I don’t plan to pay more than just the server on this, so seems like NGINX is the way to go but I am open to any simpler solution to this issue, I just need to know hot to properly setup things to have this behavior.