if i was to be serious on running a roleplay server what would be a good server to use or learn from

hey i got this server im running and it seems to keep crashing my friends say when they log on to my server they are on for about 5mins and it crashes then they says that the server restarts and makes...

i cant seem to get this server to be public and ive done everything from port forwarding to making sure my firewall isnt blocking i also already made sure my announce is on 1 idk what else to do . . ....

well i play the game regular no mods

well i have a similar problem its when everytime i open my map it crashes can anyone solve this problem

well i have a problem with my server where people can join my server but its a problem where they crash out of my server what can i do to fix that after i fixed the ping settings to its highest settin...

wow i wish i could say i had a server but actually i cant get mine running can someone help