Orwell was generally in favour of a practical, redistributive socialism, and strongly against Communism, especially after getting betrayed by them in Spain.
This is a common problem since about the 1930s, that Communist parties were big on loyalty and short on critical thinking, tending to support Stalinism and downplay or disbelieve its totalitarianism.
I second the recommendation to read The Road To Wigan Pier.
But he fought in a Trotskyist militia. With criticisms, yes. But he took up arms with communists.
Which is why I always find it quite amusing when libertarians and conservatives use Animal Farm and 1984 as support in their arguments. Orwell would break no bread with them; he was a socialist of a revolutionary bent.
As well as the point made by the others, part of why he opposed (big C) Communism was that they were counterrevolutionary and suppressed the actual socialist revolution that was happening in Spain at the time. In short, the Stalinists were too right-wing for him. Homage to Catalonia does make that clear.
There's no sense, in any of Orwell's later writing, that he renounced socialism and plenty that affirmed his socialist ideas. Orwell stated in one of those works (Why I Write, 1946), that every word he wrote since 1936 was for democratic socialism, and the ending of Animal Farm, for instance, ultimately shows the communist pigs being no different from the capitalist humans (something that the CIA latched onto when they financed the 1948 animated film version, and so they had the ending changed).
He was against Stalinism and the views of the British Communist Party (which were Stalinists). But he as late as 1946 pronounced himself a supporter of democratic socialism (in "Why I Write"), which can mean anything from the left wing of social democracy to left communists. In other writings he demonstrated a lot of Trotskyist influences. E.g. a lot of the criticism of Stalinism in Animal Farm is heavily incfluenced by Trotskyism.
This is a common problem since about the 1930s, that Communist parties were big on loyalty and short on critical thinking, tending to support Stalinism and downplay or disbelieve its totalitarianism.
I second the recommendation to read The Road To Wigan Pier.