What could I have done better to fix this relationship?

Every relationship is different. I don't feel anyone should live in blaming themself or their partner but in fact to have self reflection. Also, be honest with yourself with what you and your partner did and didn't do that caused hardships between you two and look at what you could do to fix these problems. Always make sure you are being open with what you need, want, and feel; keep open communication. Also demand respect and give it in return. In the end, you can only do the best you can with the knowledge you had at the time, so try not to look back and do the 'what if's' and regret. Learn from the relationship and move forward and progress.

Be more of a team player in the relationship because problems occur and being one sided and ignorant leads to nothing but more problems.

Understanding where each other is coming from is a big part of relationships, listen to each other and talk things out before jumping to conclusions.

If asking your former partner is out of the question, try to put yourself in their shoes. From their perspective, what do you think you could've done better? Are there any places where you showed selfishness, or lacked empathy? Were you kind and understanding towards their feelings?

In any relationship taking the time to look at the bigger picture and see what exactly is causing trouble is making a huge step to improve relationships.

This question is quite vague in itself and it has multiple outcomes but the most common answers would have been to listen to what your partner was trying to tell you; to have read between the lines a bit more. Depending upon the situation, being a bit more loving and tender towards their needs. Perhaps you needed to spend more time with the person or maybe they felt you didn't care enough if you didn't show your emotions for this person. I would recommend speaking with a Listener one-on-one about your predicament so that the Listener can get a better understanding of your situation and then will be able to talk you through what happened and help you come to your own conclusion. :)

Unfortunately, there is no single clear cut answer to this. That is something you will need to discuss with your partner. Remember that relationships require work on both ends, so don't burden yourself by blaming yourself.

If you gave it your all, then nothing. Relationships are a two way street. If you're willing to go down your way and your partner is willing to go theirs to meet you half way, that makes a good relationship.

Nothing, it wasn't your fault. It was their fault for not realising what a beautiful person they had. They let you go, they lost. You'll find someone better.

I often ask myself this question and I think multiple years of personal growth has helped me realize that everyone has strengths and weaknesses. It is not our place to be perfect at all times. I personally, pushed myself to be perfect and 100% all the time. Not allowing yourself to feel true emotions will begin to hurt you in the end. It is important to set realistic relationship goals and to communicate effectively with not only your partner but also yourself.