Vrftsjtryk

Recently I just started a new job and decided to quit soon after realizing it does not fit me. The only thing I concern about is that, while I was working I was talking to people on a website where our target user is populated and asked for interviews for market research. In the beginning recruiting interviewee did not go well, and backed fire because they felt they were mistreated. Thankfully I apologize and got some good interviews in the end. But now that I am leaving, I feel bad because I am suddenly leaving after all the talk I had with those people. I feel that it might damage the companies reputations, especially they know I am new to do the job and hearing suddenly leaving might give a bad impression.

Also, I am the only one in the office so no one can take my place.... if there were any bad impression were left by me for me leaving would that cause any problem on my side? Just to be clear, our service has not launched yet and we are still trying to see if this service is worth investing at all.... and frankly, my boss does not know anything happened so far. He knows I am doing research and got some good interviews but not what happened during the process.

P.S I have not signed contract yet...

How should I clean up, before I quit my job

You don't have a job to quit. So you don't need to do anything.

Even if you did, it's not your responsibility to work this out. During your notice period you should be given direction on what you need to complete. In your case you don't have anything to complete, so at most probably no more than passing contact details and transcripts if any.

some people still view the company in a negative ways because how I approach them.

This is the companies problem not yours, it highlights the haphazard way they went about everything. You were unsuitable for the position yet they gave you the job. Then they did not even monitor your work or progress. Your best option is to quietly disassociate yourself from this brief employment (if you even call it that).