To be honest, I would not advise looking at altcoins now...
Although my advice may seem absurd, I would recommend investing $50 by buying a Luna coin, which is currently trading at $0.004. It is possible that you will lose this money completely, but if the UST problem is solved, then there is a high probability that you can get a profit of thousands of percent.
That is not really a bad advice, investing a very low amount of money on this coin that has been crashing could be an opportunity and I have been thinking the same myself, now in the case nothing gets resolved then you only lose a minimal amount of money that you could afford to lose, but if things get resolved then the profits can be decent even with such a small investment, however this is an advanced move which I would not recommend to newbies as it is likely they will invest way more money than what they should.