If variant humans or any other races were too powerful, WOTC would have pull off an errata for those. The major issue with powers as a whole is most people don’t use them. The races and classes bring flavors for everyone, it’s up to the player to know how they want to play D&D and which options and flavors work the best toward their goal. If you can’t figure out by yourself what fit what you want to play, you can ask around or on any D&D related place, YouTube and websites, and people would be please to share their passion and knowledge of the hobby with you.
