I have used for the last 5 years an Osprey Daylite as a general adventure pack. Which means 5-10 mile walk/hikes, up to 30 mile bike rides, and even short kayak rides.
And it lets me carry enough snacks and tools and a 1st aid kit for any of these trips for a family of 3.
https://www.osprey.com/us/en/product...AYLITES21.html
But you should think about what you need to carry, what you want to carry, and what you actually can carry and figure what of a dozen options fit that requirement. I picked the daylite because it hit the sweet spot of capacity, quality, price, and availability since the local outdoor shop had them in stock.