The Aries Stellium, Cancer moon, and Libra rising are three out of the four cardinal and leadership signs, so they form a T square to each other. This means that this combo causes challenges, although it also makes life more exciting. Depending on what planets are in these signs or Capricorn, this can activate your conflicts even more.
If Libra is rising, the Aries Stellium should be in your seventh or partnership house. You want to be in a partnership, think about it often, and with Mars there, put a lot of energy in your personal or serious relationships. Aries can make you too bossy and can make you want your way in a partnership, so that's something you want to watch out for. This all opposes the Libra rising. You seem or have a facade with this Libra ascendant of someone who is gentle and will even be quiet about your feelings to avoid an argument, so that's part of the conflict you feel in your partnerships. Throw in the Cancer moon, and you are very emotional and care deeply about those in your life, so it's confusing for sure. You want the relationship, but want to call the shots. But if the person argues or tells you this, your Cancer feelings get hurt! This is all complicated.
Yet oppositions can also be balancing since Aries and Libra are directly across from each other in the zodiac. Depending on the planets in Leo or Sag, you will feel more balanced at certain times. This is what's going on.
The Venus in Taurus is a nice, calming port in a storm in this complicated Aries, Cancer, Libra combo. It means you are romantic and sensitive in love and helps tone down some of that Aries "My way or the highway" vibe. Even Cancers can be manipulative. With a Taurus Venus, in love and social life, what you see is what you get. So you aren't going crazy, it makes astrological sense. I hope that's some small comfort. Probably the Cancer moon makes you feel misunderstood because your emotions are so deep and sincere. You may not show that to others so much, but it's nice with the Taurus in you.
Planets like Mercury and Venus tend to be in Aries in early Spring, so that would activate the Aries stellium and in early Fall, the Libra influences will kick in. Watch out for the Winter Solstice, when the Sun goes into Capricorn, adding yet another cardinal sign to this. But you are also very ambitious and goal oriented and will accomplish what you set out to do. Just watch it when planets are in those cardinal signs, this is what activates the conflict in you or the oppositions that can calm you.