Once you understand that you are OK being alone is when you will clearly see that you are worthy of having a healthy and reciprocated love relationship. Most people feel disconnected at certain times in their lives. This is totally normal and can actually be a motivating factor in improving your life when you are faced with a little hardship. You have the choice to stay in the negative mode in front of you or find ways to jump over the hurdles thrown in your path.
Your partner should be a part of your life, not your entire life. No one wants to take on that role and if you put the shoe on the other foot, would you really be happy with someone who doesn’t love themself enough to be the best version of who they could be? Both people need to bring their “best self” to the relationship for it to work long-term.