OMG, and XLM are on my watch list as well as Cardano. Like you I don't want to sell other coins to gain these and I am currently on my emergency fund build phase. A big part of me just wants to buy and take the risk but I've always tried to play it safe so I'll wait it out a bit.
Well if it's any comfort to you, OMG has some risk of being classified as a security, XLM may have to high a token velocity to ever see strong price appreciation (profit), and Cardano may be a great idea that's a decade away from being possible to actually implement. So no harm in waiting and seeing. Perhaps you are being protected. 😁
Thats a good way to look at it. I'll try to stay true to my goal of building the emergency fund before buying some more crypto.