I feel I should also mention other groups, anarchist are pretty cool people and get things done but lack organisation, you can easily find anarchists in your local areas through social medial, search terms like radical, anarchist or in demos all black masked up. Socialists search google with your location and socialism, or find them at union pickets, selling papers in cities, socialist groups trend towards the original marxist teachings aposed to the stalinist philosophy. Communist groups tend to be Stalinist / moaists which personally I don’t support with their stance on sexuality. Avoid the Spartans: a socialist group that are a bunch of nonces and wish to lower age of consent. Avoid larger broad left groups as they trend towards upper middle class liberals (dictionary definition) without a solid doctrine.

Also try to find a place that keeps identity politics at a healthy distance. I made a home with The Socialist Party ‘formally militant’ as they are principled unlike the SWP.