I agree with downandlonely, here.
I’m happy on my own, so it’s probably easy for me to say, but if you invest time in yourself, it can make being single more tolerable if you’d still prefer to be in a relationship. I do think it’s best to maintain a sense of independence even if you are in a committed relationship, because sometimes it can be difficult to recognise when it’s actually more of an enmeshment. There’s nothing to say a previously good relationship can’t become something unhealthy later on, either.
Having a stronger sense of who you are and what you want is beneficial in many ways.