How to stop ad emails

I seem to get almost hourly 'Ad' emails from a few sites (mainly Jet2.com & Temu), none of which I have an account with or use. I delete them and they disappear entirely not even appearing in the bin for deletion. Also, I recieve a duplicate email at the same time directly into my Archive Folder which I also delete and it vanishes.

Not a great issue I'll admit but irritating and I was wondering if anyone else could help solve this issue or wether it's simply a way or trying to get me to stop using the free version of Outlook and start paying?

Thanks

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