No problem, I've had the exact same problems when handing games to my friends/relatives and they cannot figure them out, I'd recommend periodically either posting new builds, or giving copies to friends.
Also, the way I've handled it is like this, have 3 skill levels of friends:
One that would play the game/receive updates often enough to become relatively good at it, that can essentially "speedrun" the game,
One that doesn't play it as often, and is a moderate skill level, for example, someone who can make it to the end of the game with little issue
and finally one that rarely ever gets builds, as more of a casual level, that way they do not get adjusted to the difficulty as the other two would, and would be able to provide almost an outside look on the mechanics/controls of the game if you make changes
examples of builds i may give out to each skill level
High skill: xp rates change, puzzles tweaked, movement speed tweaked
Medium skill: new level added, new puzzle type (timed doors, switch puzzles, etc), major movement changes (double jump, second dash, wall jump, etc)
Low skill: new episode/act created, major previous level revisions (changing puzzles/flow of an existing level), and any major ui/menu changes
