Updated version of SuperReach (Donors only) coming soon, no configuration needed unlike the current version. Only intended to hit entities, not to place/break blocks.
It also integrates with BetterCrosshair, when looking at an entity that you can attack with SuperReach the crosshair will expand and contract.
Tested with Minecraft 1.16.5 on a Spigot server.
Update: A beta version is now available for donors, if you are not in the donor group and donated, please dm me or @Dyiing