Do you think I can improve myself to become a better person?
In what ways are you trying to improve as a person?
My self-discipline, my planning skills, my ability to socialize...
Self-improvement is important to one's development and maturity and it's good that you are trying to be a better person. You should know that there are many people out there such as your friends and family willing to give you help and support if you experience any setbacks. Self-improvement isn't always easy but it's definitely something that you can always work on.
I know. People are too toxic to hang out with. Probably just some stuff on the internet.
It sounds like your well on your way to bettering yourself already. You know what you have to do and now you just have to stick with it. I believe your a good person already, you've just been held back by discouraging relationships.