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All of the sets on your pokemon are sub optimal for example, sludge bomb on excadrill isn't going to be doing any damage, excadrill also usually wants speed and attack not special bulk.
My suggestion would be to try playing around with some of the RoA sample teams and learning the tier before you try to build a team. Building requires meta game knowledge and an understanding of synergies which you will gain with experience.
The link for the sample teams for each older generation
Hi, welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide at least 3 lines of descriptions for each Pokemon to explain their roles. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with updated descriptions and I'll be happy to unlock this.