Wait, are you saying you have deck with a couple of La-Juntas, a couple of Ult Watu, a couple of Rescue and a couple of Fang pi? Of course you're gonna get creamed. You need a deck of half one clan, half another or a full deck of one clan. This whole mix and match is not going to help you. If you're strapped for clintz, well, you may need to go half Ulu Matu and half La Junta, and get some clintz for the rest of your cards. If you don't want to get any more Rescue, sell the ones you have. With a Rescue deck, it's a full mono deck or nothing. That's how they work.
In urban rivals the only decks which work are mono (only 1 clan) or half decks (4 of 1 clan and 4 of another), unless its in an event and they say you need a special deck, you can have decks which contain 1 card from a different clan but these are usually leaders (which need to be on there own) or a special card which works as a filler e.g Spiaghi.
Your best bet is to pick 1 or two of the clans you have and make a deck out of just them. (Rescue only works mono because of the support bonus, this is the same with any cards that have a support ability).
I use mono rescue with Hugo and it works quite well for me. I started out using mostly rescue with like 2-3 la junta (i know its dumb but it worked for me) and slowly transitioned into rescue, as there are plenty of good or average rescue cards that are quite cheap. (Frida, Wesley, Joana) You dont have to do rescue thought, choose whichever clan you like and transition to it.