notadictionary.com
我想我大概是个废人了
→ “I think I'm probably a useless person now.”
我 wǒ³ = I/me — the speaker referring to themselves.
想 xiǎng³ = to think/feel — expressing an opinion or belief.
我 wǒ³ = I/me — again, the speaker.
大概 dà⁴ gài⁴ = probably/maybe — indicating uncertainty.
大 dà⁴ = big/large — here it's part of the phrase meaning 'probably'.
概 gài⁴ = general/concept — also part of the phrase for 'probably'.
是 shì⁴ = is/am/are — linking verb in this sentence.
个 gè⁴ = a measure word — used before nouns to count them.
废人 fèi⁴ rén² = useless person — slang for someone who feels incapable or worthless.
废 fèi⁴ = waste/disabled — literally means 'useless' or 'ruined'.
人 rén² = person — the object of the description.
了 le = particle indicating change or completion — shows the state is now true.
