Libras are independent and care a lot about balance in life. It's the sign on the marriage house, so you like to do things in partnerships, and hope to be half of one some day, being a romantic. It's an air sign, so you are intelligent and curious. You are ruled by Venus, and don't like to argue, you are the peacemaker in the group.
The Leo Moon represents your emotions. You are generous and loving. You have great friends and will do anything for them. You love to be in the spotlight, and in a love relationship demand attention. But you attract attention too. Leos are fixed about what they feel unless they learn otherwise. You are romantic and want someone to fuss over you. But you will do the same for them.
Sag rising is the way you appear. You are probably tall. Sag people are easygoing and accepting of others. You like travel and may be interested in different cultures, or an art from one.. Sag rules education, law, and philosophy. You are talkative and generally have strong ideas.
So having air and fire signs in your trinity, you will get along with other air signs, Gemini, Libra and Aquarius. I like Gemini because having Sag rising, it's on the cusp of your marriage house. Aries could be a good choice. I think earth and water signs would bore you. But be aware this is only a trinity, all of the planets in your zodiac chart are in a sign and one of 12 houses. So there's a lot of info I don't have here.