It's pretty hard to compete with free transactions. No decentralized system can offer that -- users either pay via transaction fees, inflation or demurrage. Otherwise there is no incentive for honest consensus.
some of your statement is not true look on nano coin about transactions.
Nano is not secure, nor is it decentralized. It uses a variant of delegated proof-of-stake where a limited number of centralized delegated representatives vote to prevent forking or double spending.
That's the trade-off. If you want reliably irreversible and censorship-resistant transactions, Bitcoin is the obvious choice. There are thousands of cheaper alternatives -- including Libra or Nano -- if decentralization and strong security are not required.