Check out this way, some how worked with single quotes...

let myvehicle = "car";
let weather = "rainy";

if(weather == 'rainy') {

if(myvehicle == 'car')
{
console.log("I go to the office");
}
else if(myvehicle == 'bike')
{
console.log("I Work from home");
}

}
else if(weather !== 'rainy')
{
console.log("I go to the office");
}