Welcome to the yo-yoing community!
Yomegas are generally looked down upon over here especially after the incident, but in my opinion, they make acceptable throws.
There are plenty of other better choices though! I suggest looking into the Adegle PSG, some YYJ throws such as Legacy II or Kickside, or some certain YYF throws such as the whip.
As for the split-bottom mount, try not to move your throw hand index finger and allow the momentum to swing the yoyo around the throw hand index finger.
Also, if your string is constantly tangling, it might be a problem with string tension.
Here’s a good guide to adjust string tension^