Steam installs perfectly well on Debian and most games pick up a small performance boost from running on an OS with less overheads.

Unraid servers can be hosted from Debian with few issues .

Stay away from advertising money , if you need money to keep a server up then start a gofundme or a patreon or something … make it community based so that your instance stays community based .

if they keep it up at this rate Linux will be the only OS people use by the year 3090 (16.66 years per percentage point)