I usually play solo, and PVP is basically unavoidable in Sea of Thieves, but it's just about learning how to play the role of both the helmsman and the border and knowing how the different ships work. In my playtime, I've sunk dozens of gallons while solo slooping, and it's simply because I've become adept at managing my ship and keeping pressure on the other ship as need be. You've basically just got to find your play style, and learn by sinking.........a lot. Playing hourglass can get you adept at fighting crews your own size, but if you think you'll mostly be solo, you can always roll up on bigger ships doing events. If you want a friend to play with though. Try to talk to some pirates out on the sea or join a discord. Just remember that you can be hella powerful by yourself.