Log = people. That's right. However, an extended Form of Logo or logon is used whenever you add any Hindi post position i.e. KO / Ka or Kay. Ex: Bahut saaray LOGON KO Hindi aati hai. Ye in LOGON KA ghar hai. In LOGON KAY paas paise hai.

'Logo' is neither singular nor plural in hindi,for people. Plural is also 'loag'. As it can be seen as nominative case. 'Loago' can be Address mode or the plural modification in instrumental case.

Yes, We say Log (Singular) / Logo (Plural) to the people in Hindi language ie Sub log (Everybody).