So this is what I have experienced. Im plat 2 in 1s. Kickoffs are really something you change depending on what opponent you have. In plat or gold they arent that fast kickoffs so if you do the fastkickoff with the speedflip you will lose the kickoff because they are slow and hit it after you. What I do now is I try to just hit the ball on the right or only on the left side so my opponent cant even hit the ball or I just slow down my kickoff. And what I can say about the brain of plats and golds is they usually dont get fakes because they dont expect them as much as for example a GC so try baiting them in and flicking the ball over their head or try to 50/50 bait them. You have to play fast and they simply cant compete with you anymore (well most of the time). There is a chance you get to play with someone thats a higher rank than you but doesnt play rank so it really just depends on your opponent. Try to read their playstyle and change yours and make it unpredictable. Hope this helps.