No, you need to lobby up with at least 1 other clan member to gain clan XP in mp and clan vs clan. You can, as a single player, get a bunch of wins during clan wars & if your clan finishes top 3 you get a clan xp reward. You of course need at least 3 members in your clan to be eligible for clan wars. There are some good posts out there that discuss these subjects in detail & are very informative. Good luck.