Anyone else feel the controls are frustrating?

Coming from PC, I still can't get used to the controls on a phone after dozens of games. Does anyone else struggle with the touchscreen controls? To be honest, writing this out I feel like a lot of problems are caused by the small phone screen size making things very difficult to see or select.

It's not so bad if it's a simple champion, but anything requiring combos is the death of me. Are there any tips or tricks for the scenarios below:

• Having to combo abilities, especially in different directions. For example, Ahri's basic gameplay is ulting forward and throwing out charm quickly. I find it very awkward to have to rapidly drag in two different directions without tactile keys, it's really easy to press on the wrong button.

• Target selection for engage / divers in large teamfights. I understand you can target select enemies, but it's annoying when they dip in and out of vision or if you need to quickly change targets in the middle of the enemy team. Also if you tap on an ability thinking it will target your selected enemy, but they're out of range or entered a bush and your ability smart targets to someone else instead.

• Selecting allies to buff as supports. It's fine for most healing abilities, but if you have any DPS buffs you want to target onto certain people it's pretty annoying when everyone is grouped up or stacked onto each other.