else is an unexpected token js

I'm very rusty at JS so I may be messing up my syntax but for some reason else if just won't work. This is the code snippet:

if (command == 'flip') {
    console.log("flippin")
    var coin = Math.round(Math.random())

    if (coin == 1); {
        coin = "Tails"
    } 
    else if (coin == 0); {
        coin = "Heads"
    }
    else if (!coin == "1" || !coin == "2"); {
        console.log("hey you messed up, coin = ", coin)
        coin = "Uh Oh... Something went really really wrong here so I can't help ya here :( blame my dev not me man. Don't worry I already reported this problem to him!"  
}
}    

The error I get is:

SyntaxError: Unexpected token 'else'
    at wrapSafe (internal/modules/cjs/loader.js:1001:16)
    at Module._compile (internal/modules/cjs/loader.js:1049:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)
    at internal/main/run_main_module.js:17:47

strong text (The rest of the code is just a discord bot I am working on)