Is it my fault for keeping single till now?

It is not fault at all. Nothing is in our hands. Man proposes and God disposes.

it is also good to remain single as you can enjoy your freedom, don't be bother with what other saying, just because of your age and other talk and get marriage with someone that you don't really love and you'll regret

no not at all some people look and look for a partner for so long then they get bored and need a break for a bit. Its not weird as im sure its not the highest priority of yours and no one knows when they will find a partner. Ignore your colleagues its your life and so just do what makes you happy.

I agee with you, it's right to make you own decision, about your own life, I don't believe in taking everyone advice, about my life any way, if you want to remain single that is your own business, nobody should make you feel guilty for being single, this is somethin you have to work out for yourself, if you just jump into a relationship, and it don't work out, you will feel bad, and don't let noone set you up with someone you don't know, find your own date, at your own time.

No, its your feelings' fault since you've said that you're still single because you have not yet found your true love. Moreover, nowadays, it is normal when other people criticize you for being single since for them is a must to have one. Anyway just let them also maybe they are just concern thinking that you're sad for not having a partner.

it's not you fault for keeping single.you should better forget different voice which from your friends,co-works and others people.keeping happy is very important.
good luck!