Hi! What's the best timing to buy a battle pass? I mean is it better to buy it at the start ot wait till I ulock rewards and then buy it? Is it worth buying nattle pass at last in case you don't play it much to unlock most wanted rewards?

I'm not new a new player but I recently tried to get my friends into game. They like overwatch so they thought they'd give it a try. They enjoy it but after 3 days of straight playing they have only won 5 games because every game there is o...