Changing url with click and built

Hello,

I’d like to change my blog address. I’ve installed it with “click and build” proposed by my host (1&1). So I’d like to change the URL now: https://cherjournal.mabulle.net/ to https://mabulle.net/ (I own it with the same host). I’d like the first one to be available: when people goes to https://cherjournal.mabulle.net/, they will be redirected to https://mabulle.net/ and of course, without loosing any data. I have to say, I don’t have strong skills with these “web stuff” so please can you help me? is it possible and in case yes, how?

Thank you in advance for your help