What causes a bake to collapse like this? Any tips on how to prevent?

Made a Orange Creamsicle IPA flavoured cake for my partners birthday!

Double chocolate cookies

Chocolate Banana Cake with Peanut Butter Frosting

Black magic cake

What about it?

Cake made for my nephew’s birthday, he loved it 😍

Glazing some raspberry mousse bombs 💣

Not sure where else to post because r/askculinary doesn't allow photos, but do you think my oven rack will survive this cast iron pot for 3 hours?

What about it?

It sagged immediately, but it's been in for 20 minutes now and it seems to be holding. Should I be worried about this? Will it break?

Well, not cake but still: Happy cake day to me

What about it?

I just learned how to make this very delicious swan cream puff. I dont know where it originated, but i remember eating this when i was a child near the German-Austria border. Im not much of baker so im very proud of me.

Coconut Mango Pudding

Anyone know what this decoration is called and how to achieve the “pedal” look?

Does anyone know this cake?

What about it?

Does anyone know what this cake might be called or how to find a recipe? I had this at breakfast on a trip and want to recreate it