When I think about a deflationary I think of a system where every time a coin is moved in the system a part of it is burnt as part of the algorithm.

So technically it would mean that with every transaction the coins would get scarce and as a result they would increase in value.

This is the premise behind  Deflationary Finance which has deflation rate set at 10%

This is a new Deflationary DeFi project  being developed that should be followed by those genuinely interested in deflanatory DeFi

Here the tokens would be automatically destroyed making it appreciate in value over time( hey I already said that).
For details refer to the following links

Token Name: Deflationary Finance
Token Symbol: DeFi
Initial Total Supply: 30,000
Token Characteristics: Deflationary ERC-20 Token
Website: https://deflationary.finance/
https://twitter.com/DeflationaryFin
https://t.me/deflationaryfinance
Token Contract Address:
https://etherscan.io/token/0xa73d6348fbc57913574081868175ba0028f38a47

Here is my ERC-20 address

0x17DE3481C6F6c129cbad0fA1d4852cD4cC41Ee15