Can I post at all these places without making more accounts?

Whatever is the most popular at the time of the games release or update. Valheim/terraria/Minecraft/satisfactory/palworld to name a few.

Game servers that my friends can enjoy

Am I on the list

Its not 100% ready if you had to find drivers for your Ethernet and mess around with settings to get a game to launch. Most people aren’t savvy and expect their programs to just launch.