Salvador, welcome!
I fully understand your desire to find the right plane as soon as possible, and it's obvious you've been looking for quite a while, and you're ready to buy. There are many to choose from, and as you're finding out the hard way, some are not so good as others, despite representations. Your decision to find a buying buddy is a good one. It sounds like you've been doing some reading on the forum, and that's a VERY good idea, too.
However, no matter how long you've been looking for airplanes, you've only been on the forum for a few days. There is much to learn here about buying a plane for the first time, and it takes time to learn it. Don't continue to learn hard lessons the hard way. Take whatever amount of time it takes to join us, ask questions, read, and ask more questions. It might take a little longer to find the right plane, but I guarantee that in the end, you'll be glad you waited.
Lesson #1: There are many differences between different models of Cessna 150's and different 152's, and while all are similar, they are NOT all created equal. As a student pilot, do you know what you are specifically looking for in an airplane?