Register a cheap LLC or simply make up a name, such as Hangman Cleaners or Hangman FMS (Facility Management Services.)
Register a few domain names for:
Cityname+ carpet cleaning, shoe cleaning, curtain cleaning, chimney cleaning, roof cleaning, window cleaning etc.
Spend a few 100 on the services here to rank these sites and your phone number. GMB is probably ideal for local SEO.
Spend another 100ish on printing up flyers on real physical paper and hand it out or slide it under windshields in parking lots. The more graphic and filthy the pictures in the flyers and the grander or more outrageous your claims, the more responses you will receive.
Get yourself a cleaning crew uniform, a mop, some cleaning supplies and you are in business. Easy $300/day minimum in any first world country and $50-100 in a developing country.
If you are averse to getting your own hands dirty, set up another website that sells 'cleaning leads' and refer your inquiries to existing cleaners. If you have enough leads, you could also just rent (or buy) a truck and pick up laborers/illegal immigrants and drop them off at the job, pay them about 20% of what you make.
Very low startup cost hustle and your results depend entirely on how convincing your ad copy is. Nobody wants to wear stinky shoes or live in filthy homes.