Ask yourself honestly how do you prioritise your time? If you have 30 mins to spend on the internet could you tidy instead? Do an exercise class online? Etc etc
I have one child - I've been told she is easy, she is, but I've worked hard to get to this. Strict about routine and expected behaviour for example. She is neuro typical and no disabilities so can't compare with those who do have this to work with.
I'm exceptionally organised with reminders on my phone for everything. I have no paid help in the house. I work 30 hours, husband - full time with standby rota. Husband is helpful - will do bins, dishwasher, bathtime/bedtime, hoover etc do workload shared to an extent
I clean as I go, I tidy as I go. If I boil the kettle for a cup of tea a wash goes on while I wait for example.
Exercise is done via online classes by getting up 30mins earlier than the rest of the house.
My neighbour doesn't work, has 2 at school/preschool and small baby at home, I can hear her playing her piano most days for long periods of time yet when she talks at school pick up she moans about not having any clean clothes, the house is a mess etc I bite my tongue not to point out that she could decide to spend less time playing her piano and more getting stuff done. Obviously her piano practise is important to her but realise that's why nothing else gets done.
It's not always about other people having it easy - they work hard they just prioritise what's important.
Decide what is important to you and do it.