Usage of whatever, whichever, however

However she tried, she couldn't recover the data.

The job was not interesting. However the pay was good.

There are three cars, however we can't use.

You can do however You want.

However, I am not good at french.

However busy you are, I want you to finish the project.

Whatever you do, do your best.

Buy whatever you want.

My dog eats, whatever I give.

You can do whatever you want.

Whichever day you come, I'll happy.

Choose whichever you like.

I'll ware whichever color you buy.

Cook whichever you want.