Agreed. But that's not the question you asked. You asked "am i a loser for this"? My response therefore stands.
If you're actual question is, "Is this normal?" then I'd say it's not normal but it's very common. I'm really no expert here, but I suspect that the issue might be that you are focusing on trying to speak to your "crushes", where you really want the conversation to go well. That puts a lot of pressure on the conversation (and you) to deliver. So, instead, don't try to strike up conversations with people where it's important that you impress them somehow; strike up conversations with "regular" folk. If the conversation goes well, great. If it doesn't, you've lost nothing.
Keep dong this and one of two things will happen. You'll gain enough confidence / experience to talk to the person you really want to speak to, or you'll form a good friendship (or more) with the person you opted to speak to instead.