SCCM 2012 upgrade to new(latest) version

Hi, in our company we have SCCM 2012 in version

now, because we are in hybrid mode, and begin migrate the users to the cloud, I need deploy office 365 to all PCs in company, before uninstall old version of office, of course. I find guides, how deloy O365 via sccm, but, in our sccm missing options OFFICE 365 CLIENT MANAGEMENT {btw, updates and servicing missing too). I guess, the problem is, old version of SCCM. I trying deploy o365 by this video https://www.youtube.com/watch?v=yeH7Zp3z31I but, with no result. Deploy not starting.  So, I trying update/upgrade sccm, but, I cannot find any updates on internet(MS websites). https://www.systemcenterdudes.com/sccm-2012-version-numbers/

SCCM 2012 is definitly out of support? If yes, what its a altenative. I find SYSTEM CENTER 2016. Its this a succesor of sccm 2012? If yes, I have to download this vrsions:

• • System Center 2016 Client Management Suite

• • System Center 2016 Datacenter

• • System Center 2016 Standard

• • System Center Config Mgr (current branch)

which of this is rught. But, if its possible,I would like to try first upgrade old sccm, or deploy o365 with old sccmin the current state.

thx for reaction.