In the hothouse_________of social media, you are filled with envy when you scroll through photos of exotic_________and gleaming houses, but you reassure yourself that only_________ people want these things - your humble home is all that you really want.

hothouse atmosphere of social media — "hothouse atmosphere" is a natural collocation ("hothouse" = intense/insulated environment).

exotic vacations — fits envy-inducing photos.

only superficial people want these things — the reassurance pattern: dismissing the envy by labelling the desire as superficial.

Why other options fail:

• Option 1: "climate" is too literal; "ordinary people want these" doesn't capture the dismissive judgement.
• Option 2: "madness atmosphere" reads oddly; "embarrassing people" is awkward.
• Option 3: "excitement of social media" is weak; "overachieving people" doesn't match the dismissive tone.