Bitcoin cannot make itself into smart contracts, Bitcoin has a patented system like it was first created and until now Bitcoin is very insensitive to Smart contracts.
I see the function that Bitcoin is definitely the first coin in cryptocurrency and the matter for Smart contracts is presented by altcoins or alternative coins which are certainly created by Ethereum, Binance Smart Chain and various altcoins.
Yeah, bitcoin cannot make itself into smart contract, because bitcoin is unique .
Bitcoin developer is anonymous, who is Sathosi..
No one know who is he or she .
So, I think bitcoin being leaved developer ,so impossible bitcoin will have smart contract platform.
Bitcoin is bitcoin, remain the King of crypto currency.