To the OP,

You're no loser. You are worth it. So, please love yourself and don't put yourself down. I found out like you that people walk all over you if you allow them. So, you need to set boundaries and limitations. I know how it is to have low self-esteem since I was never praised while growing up and was abused mentally and physically. I am much older than you now but realized if you don't love yourself, nobody else will. Love yourself. Be kind to yourself. When the wind is taken out of your chest, breathe again for fresh air. Please be strong and don't give up believing you are valuable and worth it in this cruel world. Life is difficult as it is. I encourage you to find yourself by being kind to yourself. Enjoy life as much as you can. Relax, sleep well, eat healthily, and stop worrying about things you have no control over. In this manner, you may have a brighter outlook on life.

So, love yourself and people around you will notice how well you take care of yourself. Then, they may be interested in knowing you. Moreover, once you learn how to love yourself and take care of yourself, it is easier to love others and take care of them. Best wishes!