Sure, I'm not great at giving advice but I'll try. It seems you know what your character does but in terms of execution you do the same thing 90% of the time, It's how I kept getting those early kills of F-Smashes at the ledge as PAC. I suggest looking into exploring different options and changing up what you do
So instead of doing drop down up air at the ledge everytime as Ryu maybe try going for jumping over and then backairing or neutral getup into wake up shoryu.
Good stuff though, it's hard to pickup on what's lag and what's an actual error in how a person plays online