Ideology is the symbolic structuring the imaginary (both the constitution of the Other and its occlusion) as well as intervening in the real (we actually landed Perseverance on Mars). The Real shows up in contradictions between and within ideologies, and in the astronaut's traumatic realization that his world, both mediated and produced, is shaped by the signifier. So not all hope is lost as there is still freedom in the real and always will be. There is still a chance that we might dodge the bullet.

tl;dr The astronaut discovers his world is a signifier-produced reality, and in that traumatic Real there's still one off-switch: always has been, always will be...maybe

I am not smart enough to understand this.

But what is the lacanian Real? A simple definition, "That which resists symbolization"
Perhaps a better explanation: https://www.youtube.com/watch?v=InZUkhk4heg

Waow TIL there's a community here about Žižek, quite impressive for some Slovenian dude

Don't worry, neither is OP

Yessir, it's only a few hours old, though😅
I have essentially no idea what I'm doing, but I grew impatient waiting for a more qualified user.
"I alone cannot change the world, but I can cast a stone across the waters to create many ripples." –Mother Teresa

It's just a meme for the lols😆
I know it sounds convoluted, but all I mean simply is that our shared symbols shape how we see things, but moments of rupture (ie the astronaut's shock) show those symbols can fail, and that's where real, unexpected freedom can emerge.