Comprehension is the ability and willingness to understand a person or a situation from their point of view. To be able to successfully communicate, both parties need to be able to feel, hear and sympathize with what the other person is saying.
Your level of comprehension can be measured through your personality, background, self-awareness, and your willingness to grow.
If you have a personality disorder, it could make it harder to be comprehensive or empathic. If that's the case, ask a professional to help you find ways to improve these aspects if possible.
There is such a thing as being too comprehensive. Being too comprehensive will cloud your judgment on people who are important to you, but are also toxic. You’ll probably accept having toxic relationships because you think you can save or change them. Which isn’t your job and is very unhealthy for your overall health. You cannot afford to lose yourself by caring for someone else.
So while it’s important to care about others and their situations, there is a balance you need to achieve. Too much of anything is dangerous. And becoming a well-rounded person means you have to be able to balance everything.
As you can see, becoming more comprehensive has a lot to do with you. And that counts for everyone around you. If you feel like someone is unable or unwilling to understand you, it's because there's a lot of work that still has to be done within them. That is not your problem. And that is not your fight.