What does this stance mean with these planets? What aspects of my life I should work on?
Google some of the terms I posted. That will help you answer many of the questions.
You have a pretty complicated chart.
Some excerpts to get you started:
Venus in the 12th:
https://hniizato.com/12th-house-astrology/#venus-12th-house
Twelfth House Venus in Trouble – Fears about Relationships
Venus in 12th house might point to
limiting beliefs about relationships.
If your parents had been poor role models for relationships (either through criticism, rejection or abandonment), you may find it difficult to fully accept yourself and articulate your needs in relationships.
Astrologers often say that twelfth house Venus suggests hidden affairs. However, a private affair is more a symptom of a dysfunctional 12th house Venus rather than its fate. When the Venus person does not value herself enough, she may settle for unavailable partners.
Another expression of 12th house Venus is a sense of private ideals that you secretly hold within. This sense of idealism might be rooted in disappointments from early home relationships. It may be your psyche’s attempt to heal past wounds by fixing what happened in the past.
Mars conjunct Saturn:
Mars Conjunct Saturn
Core Theme: Identification with father’s values. Focused energy.
Shadow Manifestation: If your father held negative views about you and/or himself, you might have accepted the limiting perception about yourself as truth. As a result, you may be repeating much of the disempowering, frustrated patterns your father exhibited.
Conscious Expression: Once you’re able to separate from your identification with your father’s destructive patterns (or, if you are able to identify with his positive patterns), you’ll gain a stronger sense of self, able to achieve new heights in life through focused effort.
https://hniizato.com/mars-saturn-conjunct-square-opposition/