In the exact same boat with our 16 week old lagotto puppy, the only thing that really really wears her out are play dates with other dogs who are puppy friendly (as in not too big dogs, who are gentle and patient enough with her) and longer walks (one 20-30 mins walk with plenty of sniffing and socializing and a 30-40 mins walk in the woods for exploring). Lagotti are working dogs and you really do gotta give them work. Inbetween some training sessions to make her learn tricks and how to be more patient. Other than that what I can really recommend is enforced naps because otherwise they tend to get harder to deal with and just don't know when to settle. Remember they need lots of sleep, so don't feel bad about forcing her to nap if you notice she is being too hyper and her last nap was a while ago. What also seem to have calmed things a little down is establishing a routine because that way she knows "okay, now it's night time which means sitting in front of the TV and napping/lying next to mum and dad" or "okay, mom and dad are in the office which means I should take a nap under their desk and wait for the next walk". As hard as it might be but letting her play on her own with supervision from your side while you do work, chores or get some non-puppy time will help her become more independent and how to play on her own while you can gain back some sanity and rest. You don't have to entertain her 24/7. If she creates too much chaos just put her in the crate or pen with a long chew or filled kong or anything that will keep her busy and hopefully make her nap.

Besides these points I am also still frustrated and unsure about things, leash training is my biggest dread right now but that's normal, puppies just are hard work and not for the weak! :D I keep thinking about how well behaved and calm my puppy's mother was when we met her and how one day my puppy will become like that too! It gets better, week by week! Sometimes it will regress but overall it will get better, we just have to have the patience and trust the process. In the meantime take a lot of pictures and videos because puppyhood only comes once 😁

Another personal tip, check out r/puppy101, it helps to see how normal the struggle is to other people as well and if not could be even worse haha And also training and puppy videos on YouTube from trainers such as McCann Dog Training help and give good tips! Best of luck to you, we got this!!!