I don't think there is any reason to be worried, btc went up alone(60% dominance) and now it needs to go back down(about 50% dominance) so that everything can go up again. alts are red because when they get pump a lot of people trade them for btc, but since it was going down during last alt pump they converted to fiat. Now they are waiting for btc to be stable to buy in, a lot of people think it needs to drop to 6k. Anyway I think this is all normal and there's no reason to panic, bch is not taking over btc.