Howdy, Networking Gurus and aficionados total newb and a network pleb here trying to learn more about this mystical realm.

b/c this ended up being longer than I wanted, TL;DR:

I want to host an IDE on a domain and be secured via HTTPS and a long password. I don't want to use RDP or VPN's as I usually do not have access to these tools. Could I secure it? If so, where do I start?

Below is the, Yeah-It's-Long;Will-Read:

I have been learning to code lately (thanks CCP!) and am wanting to do it more on the go. Utilizing services such as code-server, I can host a "IDE" on my local network and use a --link and proxy it on coder.com and use my git-hub account to log into it. This is done on HTTP.

Being the kind of person I am, I prefer to do things myself if I can. Mostly to learn if I can indeed do it and to further appreciate the services being rendered.

My question(s): can I purchase a TLD domain, use cloudflare's services, a TLS/SSL certification process, a DDNS to update cloudflare's API, and point cloudflare to my public.ip:randomUsedPort to then access my IDE online anywhere (and using some god awfully long complex password in code-server)? If so, where does one start? If not, why not/what are the issues?

Basically I am trying to harden my server, harden my network, and access my IDE. All without using VPN's or RDP. I am wanting to try this because I don't have access to a VPN or RDP or installing components. Sometimes all I have is just an internet connection and no admin access.

System/network specs:

I am using Ubuntu Server 20.04 LTS, network atm is a standard home network. Soon my network will be upgraded to pfSense on a netgear device.

URL's I've been using:

Setting Up Code-Server on Ubuntu 18.04 LTS with HTTPS
Code-Server GitHub
Cloudflare Registrar I am looking to buy
Cloudflare's TLS/SSL Cert

If all this is possible, how secure would the system be from the internet level, specially if I set-up my server in a VLAN on it's own? What if I incorporated something like fail2ban so if someone gets to the server and enters the wrong password they get banned.

Any information would be appreciated, I also don't want full on solutions but guidance; I am trying to learn and I learn best by doing.