Somebody post to my Uncategory

Install and activate Akismet, https://akismet.com/.
Mark every spam post as spam, so Akismet can learn what’s spam.

I would also look at installing a plugin to moderate users a bit so you don’t have spam users: https://www.ads-software.com/plugins/user-spam-remover/

And I would go a step further and user WordFence: https://www.ads-software.com/plugins/wordfence-login-security/ & https://www.ads-software.com/plugins/wordfence/

Thanks for advice, i will try it,,,