Hi
is there a way to decode input data of tx?

https://github.com/miguelmota/ethereum-input-data-decoder I've used this successfully in the past

https://lab.miguelmota.com/ethereum-input-data-decoder/example/

without the ABI you can just get the function signature and the parameter bytes

Thanks. Any good way to estimate Gas Limit?
I used web3 for that but some time tx goes out of gas

You can make a test call on a forked blockchain