I thought the notes said that челове́к is used for words ending in 5+ and людей for anything else? Or have I misunderstood?
Yes, I should have been clearer.
For numberals ending in два, три, четыре we use человека (a different form of челове́к). For all the other numberals we use челове́к.
I meant that we use a form of «человек» with numerals, not that we always use this exact form.
Does 5 has a special thing in this case because not only the tips also if i use a translator it says людей only for five and the rest is человек
No, it doesn't. 5 is not different from 6, 7 or other numerals in this regard, so that translator is wrong.
First, there is no such form as «челове́ки» (although it can be used in jokes about aliens not speaking correctly and things like that). «Челове́к» has an irregular plural: «лю́ди».
Second, after «два́дцать» Russian uses genitive plural form here, and for the word «челове́к», the genitive plural form is the same as nominative singular.