Think OP is looking for tips on making steering easier, apart from the (very) obvious. The 4c isn't for everyone.
1. Get the car moving, especially using the road inclinations/angles to sort of roll into your desired position. The DCT allows for some "neutral" behaviors, which can be exploited with momentum to help get the wheel turned "against" or up inclinations.
2. Alignment and tire pressure/wheel size are where the magic can be found: IF YOU DO NOT TRACK your 4c, and never really honestly desire to drive illegal speeds, toe is a contentious topic on how to reign in the limits more predictably, but slight toe out in the front will make turning MUCH easier...
3. Keep tire pressures high on less treadwear tires (tires that last longer, "harder material") if you don't see high speeds, corner hard, etc...
4. Don't get trendy performance tires if you aren't using them, bringing them up to temp: some budget tires on 17/18 oem wheels that may deform slightly into "balloons" at higher pressures and losing some weight will make turning our ~1k kg cars a single finger effort for most.
5. A "hack" is swapping the wheel for a 330mm or 350mm aftermarket wheel, with 3 or less spokes MUCH thinner than the oem shape, which makes manhandling the beastie fun/easier.
6. Gyms are great, driving the 4c daily with performance tires on wider wheels is better.
7. Go a little odd and swap in FCA family power steering, especially units from the Guilia QV, and then agonize over having to come up with your own alignment and wheel/tire application so it drives right, in which case swapping in a manual transmission will quickly become an obsession. Depending on how smart and patient you are, you will end up with a fancy Fiero/X1/9, or a carbon-tight Cliov6/JGTC MR2.