As needed babysitting?

Hi! I start work again next week after my maternity leave. I work from home and have a somewhat laid back job but might need childcare during work meetings. We can’t afford daycare or a regularly scheduled nanny. I was thinking of trying to use a babysitter as needed. I know there are apps where you can have local babysitters apply but to actually speak to the babysitters you have to pay a bunch of money on the app to subscribe and get the messaging feature. Which kind of defeats the purpose of saving money. Any suggestions on finding reliable and safe babysitters in the Kyle, TX area? My job is letting me settle in a bit for a few weeks and then we have holiday breaks so I have some time before my schedule will get a bit more demanding.