How to release a smart contract with ERC20 interface and functions on the Smart Chain network?

Question

Cryptocurrency

We are trying to create our own token to introduce it into the game project as an internal currency. We took several source codes of different coins with the functions we needed as a basis, as a result - a hodgepodge. We tested the coin code in the Ethereum test network, since the token itself has an ERC20 interface, everything seems to be working correctly.
And then on BCSCAN we got to several tokens with the same interface as ours - ERC20 but in the Smart Chain network. After some digging, we found a lot of similar coins there, but how were these March contracts published and issued coins in that network?
We really want to understand this issue, since the gas in that network is much more economical and we want to issue our coin on Binance Smart Chain.
We ask the community for help with this issue, no such information was found anywhere on the Internet...