Private network inside managed apt network?

I recently moved to an apartment with a managed internet/network, there's a ruckus icx 7150 switch in the closet and a wifi hotspot on the roof in the living room (cant see any brand/model) ethernet ports connect to switch, and what i beleive is wan comes to the switch as well.

If i buy my own router like a ubiquity dream router, will it be possible to set up my own private network if i connect from the switch to the router? I have a nas and a separate server i was starting to set up, and i would like to keep those and my own devices isolated and secure.

Is this possible? Do i need specific hardware? Any help is appreciated!

Network is managed by spectrum if it makes any difference.