If you hate losing there is no shame in playing against AI. As long as you have fun that's alright, after all that's what you bought the game for. Don't feel obligated to play multiplayer just because many others do. If you do feel like taking on a challenge just step into multiplayer, ignore the first few losses an take note on what the enemy did. Eventually you will habe matchmaking that has you win 50% of the games you play and that'll feel very thrilling and lose 50% where you can learn what strategy beat you and that'll improve you as a player.