What is the cheapest cryptocurrency to use?

I'm curious, when it comes to cryptocurrencies, which one offers the most cost-effective option for transactions? Given the volatile nature of the market and the wide range of options available, I'm specifically interested in knowing which cryptocurrency provides the lowest transaction fees and minimal barriers to entry. This is crucial for individuals and businesses looking to leverage the benefits of decentralized finance without breaking the bank. Could you elaborate on the cheapest cryptocurrency to use, considering factors like scalability, adoption, and overall usability?