Check my profile for another and better garen build.

Well, when i play with garen my scores usualy more then 10-15 kills so i put togheter first 4 items easy and i like to build garen more damage then crit, yes garen needs some crit but he doesnt need it like tryndamare so i build items like this damage damage crit.
If the other team is better then ur team u would probably have to buy cheaper items not infintity edge the best advice i can give you is play smart and adept to a game id ur team doesnt have a great pusher u would porbably gonna have to buy phantom dancer 1st so... u just need to be smart and knw what to buy in which cases

Infinity Edge costs LOTS of money, and only give 20% crit by itself. Which means you wont use its great 250% damage pretty much. Why dont you get Phantom *before*, and probably another crit enabler. Also, if you insist with using infinity (i'd go bloodthirster instead), why not picking some crit runes? Because it really seems to me you pay Infinity way too much for what it will give to your build.