Hello, I can recommend you an interesting option. I would recommend contacting Poker Club Management
https://pokercm.com/en/services/tournament-management/ . They specialize in professional tournament management and offer a full range of services. This includes developing rules, instructions for tournament staff (from security to maintenance), finding and selecting partners, training, creating a system of control and tournament management. In addition, they can develop an effective marketing strategy for your tournament, including a name, slogan, positioning and unique selling proposition. Their services also cover social media advertising and offline marketing. They are experienced in running international tournaments, so your event will be in safe hands.