Yoyo,
Welcome to RA :). Building fast is probably the most important skill in the game, and deserves the most attention. Because 'whoever produces the most the fastest wins' - Milo234. Here's some tips:
- Build menu touching build spot (see vid below)
- Lowest resolution (reduces margin for error and less errors equals produce more faster)
- Tiny mouse movements for placing buildings (adjust your mouse speed if needed)
- Fast wrist & double click speed
- High friction mousepad
- Easy click mouse and keyboard (cheap ones I find are best)
- Learn hotkeys
Check out these links:
https://redalertn8diaz.blogspot.com/2022/03/cnc-red-alert-master-class-building-1.html
Regarding cheaters - they get caught and banned. However, some players do make their own maps with cheats inside which is allowed - a warning is displayed in the game lobby.
Hope it helps!