Learn Polish: Głupio mi, bo miałem ci wczoraj pomóc sprzątać mieszkanie. - I feel awkward because I was supposed to help you clean the apartment yesterday.

While mieć generally means 'to have', using it in the past tense followed by an infinitive (like miałem... pomóc) is the standard Polish way to express an unfulfilled obligation, translating to 'was supposed to' or 'was meant to'. Because the word is miałem and not miałam, we also know the speaker is male.

Literally, głupio mi translates to 'stupidly to me'. How does that mean 'I feel awkward'?

Polish often uses an adverb plus a dative pronoun (like mi, meaning 'to me') to express a physical or emotional state. You might remember this from phrases like zimno mi (I am cold). Głupio mi is a very common idiom used when you feel foolish, embarrassed, or awkward about a situation.

Why is it ci instead of tobie, and why is it placed before the verb it goes with?

The verb pomóc (to help) requires the dative case. ci is the short, unstressed form of tobie. Short pronouns prefer to attach early in a clause rather than hanging out at the end, so placing ci right after miałem is the most natural word order.

Why are there two infinitives right next to each other (pomóc sprzątać)?

Just like in English ('help clean' or 'help to clean'), the verb pomóc can be followed directly by another infinitive that describes the specific activity you are helping someone with.