32 year old uk MGTOW here, i know this sort of thing belongs in the financial part of Reddit though I have done that already, I didn't want to say I was a MGTOW over there so I created a throwaway account, I would rather take advice from another MGTOWs perspective on this sort of thing.

UK brothers what would be the best thing to invest in? (Index funds etc)

(say 10, 15 or 20k) to start with and over the long term (10, 15 or possibly 20 years) and let it slowly build up over that period of time? Again the reason I'm posting this kind of question is because I don't know much about investing and I would rather get answers from another MGTOW minded person.