Toddler bed vs crib

Hi ladies ,

Single mom living in a 1 bedroom apartment with my son, I have a cali king bed and a average size room, my sons crib fits “fine” but I’m just limited on space. I can’t even fit a dresser comfortably.

What’s the best way to maximize space but also keep my son safe while sleeping?

He’s a roller and moves around a lot when sleeping , should I just keep him in the crib till he’s older and deal with the limited space?

He’s 18 months almost 19.

But I’m just frustrated my room is always a messsss because mine and his stuff is everywhere lol

I’ll take any room decor / organizing advice too lol

The only thing , I can’t afford to downsize my bed right now, queen beds are a little pricey and I’m just making it above water