Are this acceptable losses?

I was forced to fight this because I didn't see that the Empire had an interdictor and even after destroying it, Thrawn's ship lost its engine, so I didn't retreat because I didn't want to lose it, but I don't know if this battle was worth it

Also, could you give me some tips to play as the empire of hand, i love the desing of the chiss´s ships, but its very hard to fight against larger faction like the empire or the new republic