Hello Hannah Maria, and welcome to WW.
It is lonely when you don't have contacts and connections, isn't it? I've found WW invaluable for support, and also for a realistic idea of how publishing works - the realism goes both ways, in that there are fabulous, inspiring stories of success and also the inevitable stories of rejection. Persistence (something I struggle with) is key. As Naomi says, three rejections is nothing, and normal (I have been discouraged by six so far, and know I need to continue submitting). So keep sending them out there, and if you can, keep the same number in circulation - ie as soon as one comes back, send another out. It's a tough business. Can't answer re. mags, but I'm sure there are dozens of others here who can.
Susiex