Have you ever seen a Christian who was actually doing what Jesus demands of his followers?

They're pretty rare.  Most of the time they're making excuses for why they don't behave the way Jesus told them to behave.

None of us are perfect, however that doesn’t stop us from trying to be footstep followers of Christ. 

We stumble sometimes daily, but we don’t fall down!

A few.  They are inspiring to watch.  Many good people strive to become more Christ like but few achieve it beyond a medium level

Yep I've seen lots of them predominantly at the Kingdom Hall of Jehovah's witnesses but I've also seen a few in other Bible believing regeneration centers

Hundreds of times. Not perfectly of course. Humans are not perfect, and God knows that, and therefore does not expect perfection from us.

Yes, I think that I have.  Not me, by the way.

Of course but I am not anyone's judge and neither are you incidentally - that's God job not ours.

I've seen many of them who are genuinely trying hard and turn out to be some amazing people.

Yes I have.

My parents are great examples, living to serve others as Jesus commanded.

They don't need to attack unbelievers online to boost their waning faith and make themselves feel superior. 

Not up to you to decide those matters, God takes care of that.

“Do not judge, or you too will be judged. For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you.

“Why do you look at the speck of sawdust in your brother’s eye and pay no attention to the plank in your own eye? How can you say to your brother, ‘Let me take the speck out of your eye,’ when all the time there is a plank in your own eye? You hypocrite, first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother’s eye."

Matthew 7:1-5

Perhaps you were unaware of what Jesus had to say here. So, either you are a woefully disobedient believer or you are doing the work of Satan. Which is it?