Break the combos down.
For example start slow:
st.L > st.M > st.H
then try to combo into the launcher, which will send them to the air
st.L > st.M > st.H > st.S (S means special, which is your launcher)
Once you get that down now is where people get intimidated on, now you start an air combo. After the launcher, pull the analog stick up so you jump, but because you did the launcher first, the game will automatically take it as a super jump input, without having to imput the “down” motion. From there do not attack, just see how slow the opponent float, so you don’t have to do anything that fast here. Once you feel confortable in the air after the launcher, hit the opponent with another weak to hard chain (L > M > H)
st.L > st.M > st.H > st.S > super jump > j.A > j.B > j.C> j.S
Start slow, you don’t have to rush the air chain, it looks fast but you would be surprised how slow it can be done. Once you get that right with no problem, throw in some air supers or supers that hit OTG (once the enemy is on the floor)