It depends on the specific campaign and audience you are targeting. $5 a day is a relatively small budget for a Facebook ad campaign, and it may limit the reach and frequency of your ads. However, it could be enough for a small business or individual targeting a specific and small audience. It’s also possible to get results with $5 a day, but it would be more challenging to reach a wider audience and get good growth, and you may need to be more selective with your targeting options and ad creatives. It’s, however, always recommended to run some tests with a smaller budget before scaling up to a bigger one.