Increase your exploration and survival first off, exploration to see foragables, and survival to make sure the basic natural resources are not under q10. Dry wild windsown weeds on drying racks to get seeds, if you can't find any abandoned unclaimed seeds or crops to take.
For food early on, fishing is the easiest method, but you need someone to hunt rabbits or chickens to get bone to make hooks, and you need to make sure to keep your fishing pole equipped (it sucks being on a lake and having your hook or line break). Also you can eat the spindly taproots, if you have enough of them for spare string for your fishing line; Stinging Nettle is a string you can forage, but it doesn't work as a fishing line, and you can't eat it raw either.
With fishing, remember you need to fish where you see fish jumping in the water; anywhere else you'll never ever catch any. With lures you can go semi-afk and fish for awhile, with bait (leeches and worms), it's much faster but you can't go afk since you must replace the bait after each catch. But two crates in your boat and some fishing gear, you can keep the food going for you and your friends (it's what I did my first week or so playing, almost nothing but fishing and boating around to find other fish).

Hearthlings: Marona; Chamberlain (retainer alt), Vincavec (shaman of the Dryad Wells Forest)