Hey @Questionqueen there’s some really great advice on here!
How are you taking your bookings at the moment? E.g. by WhatsApp, a booking portal like booksolo, or a website? I know websites can get pricey for startups, so maybe a portal like booksolo might be an option for you? This would give you a more polished, professional feel - and position you as more established and reliable - than taking bookings through Messenger or WhatsApp.
Paid Facebook ads of course take money, but given the local nature of your business you could see results from just £1 a day. It is recommended that you leave an ad running for 2-3 months for best impact, but you could always start with 1 month and see how it goes. Good for generating traffic, and targeting means you will get your brand in front of the people in your area who are likely to engage with your services.
And whenever you have a client or do some practice nails, make a short reel out of your work, as well as the photos! Then Facebook and Instagram can push them out to the people who would be interested in that sort of content. May not always bring in clients as they could be shown to anyone who might not be local, but engagement would boost your page’s algorithms, and in turn increase your brand awareness.
Hope this helps, and good luck!