Zodiac Compatibility with Air and Fire, but rarely Cardinal Signs
Aries is a Cardinal Fire Sign, and Aries likes to take the lead. So Aries is not so great with other Cardinal Signs like Libra, Cancer, and Capricorn, who like to do the same thing. But from an element perspective, Aries does really well when merging with the wind of Air Signs, or matching up the sparks with fellow Fire Signs.
Aries best matches then are Gemini, Aquarius, Leo, and Sagittarius. Sometimes Mars-ruled Aries can make it work with Venus-ruled Libra, as this is a very classic Mars-Venus pairing. But that, like any relationship, will take some extra effort as those two signs like to out wit and out play each other all the time.