I can agree with that, which is one reason why I often don't identify as just a Marxist, because Marx was not correct on everything and newer philosophers have added much, such as the Frankfurt School of philosophers and the field of Critical Theory.

Google for cooperatives in your area, I am a member of a food coop and support local CSA associations/orgs. As for labor unions, see if one exists in a larger federation, if not there is an achievable process to start your own union.

Anarcho-syndicalism would be a long-term project that involves the proliferation of the above organizations as well as further cooperation between them.