This is Benben's correction which she had asked me to correct her mistakes.  Since she is my friend, I shall honour her request and have more detailed footnotes in my explanation of why I am correcting in such a way.

Why there are so many abnormal people Sleazebags Online?

I feel refresh and excitement excited, because I had just began to chat with foreigners online. Thanks to the first person friend I met. He is very nice and kind. But but we haven't did not chatted so long as we wanted because he is so popular that there are with so many e-friends are waiting for chatting with him.Then Therefore I began to find others.  Some of them 1 are were also good too and I am was addictive addicted in chatting communicating talking with the same person one. However, it does did not last long because the excitement in the end will passed gradually soon faded in the end. Then After that, I became calmed down and keep kept chatting with new friends. In recent the other days, I am was unlucky because I meet of meeting I met a very ugly horrible man. Firstly he finds found out my Skpye ID(I do not know how he gets got it). Then without my permission,he make made a video invitation. I do did not know who he is was, and I thought maybe that he is was one of my friends. and so I accepted the invitation. When I openned the webcam, I feel felt regretful regretted and shut down I quickly closed the video because the scene makes made me sick. Now I still feel uncomfortable and did did have not have had eat my lunch very well.  Maybe my passion on to chatting with foreigners is should be being is waning.decreasing.

Except for some better way of expressing, you did well in your correction.

1.  "of them" is superfluous.  It is understood from the context.  It is not wrong to have it there.  I like to be terse in this sense.  I don't like unnecessary words except for emphasis, to create a mood and to make a point.

why there are so many abnormal people online

I feel fresh and excitement excited, because I just begin to chat with foreigners online. Thanks to the first person friend I met.He is very nice and kind. But we haven't did not chatted so long as we want because he is so popular that there are so many e-friends are waiting for chatting with him.Then Therefore I began to find others, some of them are were also good too and I am was addictive in chatting communicating with the same person one. However it does did not last long because the excitement in the end will passed gradually in the end. Then After that I became calm down and keep kept chatting with new friends. In recent the other days, I am was unlucky because I meet of meeting a very ugly man. Firstly he finds found my Skpye ID(I do not know how he gets got it). Then without my permission,he make made a video invitation. I do did not know who he is was, I thought maybe he is was one of my friends and so I accepted. When I openned the webcam, I feel felt regretful and shut down quickly because the scene makes made me sick. Now I still feel uncomfortable and did have not have had lunch very well.Maybe my passion on chatting with foreigners is should be being decreasing.

Question：have you been taught the past tense in English?

Advise:its okay when you met that kind of creepy guys on the Internet, just be careful next time.