a lot of the stuff you just said is either the fact you don't look around the menu or just don't have one of the many many scripts on the forum that anyone can use.
scouting on OT? just use an auto or anything else and you'll be on top of the leaderboards. ideal ticking is retarded anyways.
"I believe there is no defensive doubletap and no doubletap on the knife 💀 ." -> standby choke/lag peek?????
"Doubletap feels slow." -> use a script theres plenty of them on here, but if you're in the market for buying one for sure buy rin.tools
Rin.tools DT on Onetap Live
Everything AA related you said -> use a script, simple as that. Use Chimera.JS if you don't feel like buying stuff, buy altyn if you want the premium stuff
Altyn AA Showcase
Misc Stuff: Use above 50 turn speed for Directional (its even better in alpha), Don't use Extended Backtrack on live (idek why you're trying to scout in the first place)
Scripts: Everything thats Needed or something that you want has already been made, get it out of your head that one script is better than the other when they both do the same thing. Theres AA Scripts, DT Scripts, Visuals Scripts all over this forum, stop being lazy and use the search bar ya know.
Menu: I didn't know that you are chronically looking at the menu, setup the settings in <30 mins and leave it be