i wrote a website, a server in go, a small os in c, a game in js, a game and server and web scraper and other desktop apps in java, mobile apps with flutter, a website with php also, implemented aes in go, wrote a parser in java. done sysadmin stuff on my vps and pihole/openvpn/nextcloud on my rpi. learn about c vulnerabilities and used metasploit. attempted to write an interpreted language. did some led displays with arduino. currently learning tensorflow.

i have never...
- written a driver
- made a game with a game engine
- created a file encoding
- implemented an oauth2 server
- made an api
- worked with vr

what am i missing? i want to be a very well rounded dev.