Any smart contract alternatives?

I'm trying to develop a dapp but the gas fees are making it impossible to develop a proper prototype – for now.

I'm wondering, do any developers here have experience or suggestions for low cost smart contracts that work right now that are actually legit? I don't care about adoption, everyone knows ETH is the only whale in this space.

Cardano has no support for oracles and that will most likely remain that way for quite some time. I've read about Algorand and Ardor. Any opinions on that?

Does anyone know of any good smart contract coin that has low execution cost, scalable smart contracts with small feesandd has support for proper decentralized oracle networks?