Can 100% support what's been said well beforehand.
TM -> Legend is a rude shock, and for a while you'll feel like a powerless Hack again.
The good news is you have excellent clubs which are certainly good enough to carry you through Legend and compete at the pointy-end of Legend tier tourneys.
You may have to spend some money on balls - but don't necessarily leap straight to the top shelf 700-whatever credit Titleists. Something like the 250 cred Callys are a great all-rounder.
Again echoing what has been said before... I would mostly steer away from the "red tee" easy tournaments. They just lull you into a false sense of security - you have to learn to deal with not being able to reach some par 4s in 2 shots, deal with greens that are like mini-golf and some howling head-, tail- and cross-winds.
And given it's a MINIMUM of 500 rounds to saturate at Legend level, you are going to be there a while even if you're the greatest player on the planet. So make peace with that, work on your game and grind away.
FWIW, I've been at Legend for approximately 18 months and 1000 rounds. I can compete (but rarely win) the free entry tourneys and occasional Ready Go. And I'm sure I'll get shunted to the back of the pack when I break through for TL in the next few (several? many?) months. You can do it. We all do. It may well end up being where I/you/we spend the vast majority of our time in this game.
At least it's a challenge! You can feel good about breaking par, then work to bogey-free rounds, improved skills at getting out of trouble, then start to find opportunities to really dial-in and chase regular birds or the odd eagle. For starters, forget your scoring and work on pushing up your fairways hit and GIR numbers as best you can to get the most birdie "looks".