Feeling exhausted and annoyed with online dating, how do I not let it get to me?

Yesterday I just posted about a girl who cancelled on me twice in a row, I now realize she just wasn't interested. She didn't even give a reason for the cancellation this time and just didnt respond back to me. I just don't get why she couldn't have said "sorry I'm not interested". I just feel pretty bad right now, I've been using all forms of online dating (okCupid, POF, and Tinder), contacted nearly 200 women and I've only gotten a date from one of them so far. The date was ok I guess but the only issues I have is that she used pictures from like 5 years ago and has gained 50+ lbs since, and she told me waaay too many details about her personal life and kept talking over me.

It's usually the same crap:

1. Talk to girl for some time, then ask for her number or a date then never hear back from her again

2. Get her number, ask for a date, then get cancelled on or ghosted

3. Talk to a girl for awhile, then she just disables/deletes her account or never logs back in again

I know other guys deal with this shit too, so I guess I'm just asking for advice on how to not let it get to me. Because it really does feel like it's my fault or something wrong with me since it keeps happening so often.

I have another date coming up this week with someone else, and I've decided if she cancels or ghosts me then I maybe should take a break from online dating and spend that time doing something else.