Hi weegem, welcome to the forum. Nearly everyone here has a loved one with addiction and some people in recovery offering support and advice.
My son is 29 and has been battling alcohol and cocaine addictions for 10+ years. I know how difficult it must be for you.
Nothing is your fault, although they will blame you for all of their problems. They become aggressive and nasty to all around them.
Until he wants help and support, you cannot force him to stop.
You have to look after yourself, tell someone close, share here or get more information from Drugfam, or Icarus Trust.
Always here to chat, also, if you scroll back a bit, there’s a thread called Theresa. There’s several of us mums with sons with addictions and they are so supportive and kind.
Take care weegem, ❤️
Lx