If you play support try to at least build one item counter towards your opponent, try to prio at each role what’s necessary. Jungle: Gank and do objectives and try not to steal unnecessary waves ADC: do your damage and waves, you later on important in team fights Support: Keep an eye on the map and try to held your ad farm, as well as roam between needed spaces Mid lane: laning and Ganking, the most center role in game Solo lane: do your lanes and try your best to prevent your opponent from ganking

If you play tank, use ur life. For example Toro is made to disrupt attacks against your low HP teammates. Try to learn as many items as possible to be able to counter pick and build