Well, we all need help to do some things, OP, even you!
I have 3 children age 5 and under, am registered blind, though have some remaining sight, and work part-time.
I have child-care for while I'm working.
DH is hands-on. He does anything that requires driving, or good eyesight (like taking DC1 cycling). There are situations he doesn't cope well with, and I take the lead in those. I would take one child swimming, but not more than one. As it happens, the older two do swimming lessons and we don't currently do swimming outside that - they are both progressing really well.
I do most shopping online. Can shop with all 3 children, but can't pay attention to what I'm buying!
There are outings with all 3 children that I will happily do alone, and outings I will only do with DH or grandparent - all depends on what's required. Some outings I could do alone, but prefer to do with someone else, as it's easier and more enjoyable. If taking one of DC1's friends along, then I will only do it wtih another adult, as don't feel confident of keeping a 'strange' child within reach (mine are well trained....)
Everyone's situation is different, and there are many ways of being a good parent. I also think that my DC benefit a lot from seeing how well DH and I operate as a team, and help each other. My 5yo is very into 'helping' at the moment (laying table for meals, tidying up living room, that sort of thing) and I see learning to co-operate as a positive thing. I used to work in a very harsh every-man-for-himself type of corporate environment, and people with that type of personality are not always the nicest to be around - learning to find ways of working with each other is very important.