Think of something you like doing that people typically don't ...
Washing and ironing business shirts, for example. Invest in a great iron, ironing board and linen spray (if you don't have these things), some recycled plastic drycleaner-type bags (to protect the garments once done), some bamboo hangers, and you could name your price.
A lady nearby me was made redundant last year during Covid; she took her redundancy and set up a cleaning company, which she has now turned into a little franchise. She started doing everything herself but now only steps in if any of her staff are away. Her business is so busy that she's hired 10 people this year alone.
Rubbish removal is another ... what a hassle, having to bag up rubbish and take it to a tip ... this is where your services could come in handy.
As is deep cleaning peoples' kitchens for them ... lots of people talk about wishing they had the time to remove everything from their cupboards, drawers and fridge to deep clean the spaces, but they just don't have time.
Point of difference is key - what makes you stand out from competitors.