Best to go with
If they have tanky team
Get this if u want.
Example build 1
Example build 2
Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
The spells i take for ADC are Heal Flash
Flash Is good for getting out of tight areas, fixing position, securing kills, dodging cc.
Barrier Is really nice if you are super aggressive in lane because it allows you to tank 2-3 auto attacks without effecting your actual health.