Baby Trader Joe

I have a website that is unable to integrate a metamask connection via web3. You also need a buy button, in which the contract will be inserted.

I'm willing to pay you if you can do it for me.

There is an example of a site with dapp, as I would like to see it, and my site, on which I am trying to implement this.
https://tinybones.club/

P.S. Avalanche network