LULU IS NOT A CHAMPION THAT YOU PLAY IN THE BACKLINE. She is a very powerful lanebully against shorter ranged enemies, and can easily 1v2 a lane while her hypercarry freely scales. Every time the enemy adc goes for a cs, e-q-aa them and watch them slowly get more and more tilted as they can't respond to the harass. W yourself and trade autos with the enemy support, chip them down and then hard engagee with your adc when they're below 70% health or so.

IONIANS NEARLY EVERY SINGLE GAME. VERY RARELY you can go boots of swiftness for roaming potential, or if you really can't keep up to your adc in a fight. Boots of mobility are terrible, as you get just as much roaming value from ionians when you just use W on yourself while gaining massive amounts of CDR.

MOONSTONE IS OVERPOWERED. ABUSE IT. Just hold your shield until it's stacked for maximum value. Once you get enough CDR you can shield at the start of a fight, and then again when it's fully stacked up. Battlesong is only for getting yourself out of positional errors that you shouldn't be making in the first place!

Ardent has been repeatedly heavily nerfed, even in it's ideal situations it is still simply outclassed by other support items, such as redemption. Please stop building it until it gets a buff if you're trying to win! Ardent is still the most fun for your adc though.

Go play a few games of adc. Learn the role to a base level, or play a few games with a friend and tell them to play an enchanter for you. Notice what they do correctly and incorrectly, and figure out how you can use that knowledge to your advantage when playing support. Watching some adc gameplay helps too! Come watch me! I always try to be educational if possible, and I ALWAYS yell at my lulu slaves.