>>55650568read the rest of my post before you reply, please. as i already stated, being a bug type generally means you have access to unique bug-type moves like quiver dance and sticky web. sand is and always has been irrelevant, sand teams have never existed, and the best sand mon is excadrill who isn't even rock type.
and while i'll give you rock moves being good offensively, they're a coverage type. you DON'T want rock STAB, you want actually good stab and then access to stone edge on the side.
to explain further, due to the unreliability of rock moves, they're terrible choices for your main option. if your best attacking move is stone edge, and you need two hits to knock something out, 1/3rd of the time you're just flat out going to fail to KO because of a miss.
rock moves are best as coverage moves because you're relying on other moves for consistent damage and only clicking stone edge against specific targets or when your best options would otherwise be ineffective.