is there something out there that eases boredom and loneliness that I am just not thinking of.
Yes, it's called stepping away and letting her manage her own life.
I think you've had years of emotional abuse that has led you to think that calling, video calling etc multiple times a day when you're mid-30s, working fulltime, have 2 kids yourself... it's only normal if you genuinely WANT to and have time to do it. In my social circle, the level of dependancy your mother has been placing on you would be nipped in the bud quite quickly - it's different if there's an emergency, but this is just normal daily life. most people don't have the time or energy to be boosting her emotional life to that degree - if my mum needed daily calls/videos etc, well.. between work, commute, raising small children, i could manage it for a few days in a row by juggling stuff.. but it wouldn't be sustainable.
Think about what committments you are having to juggle, OP.
Presumably:
You want, and need, to take care of yourself.
You want, and need, to be a good mother.
You want, and need, to be a good wife.
You want, and need, to be a good employee to enable the above.
You want, and need to be a good family member.
Notice the running order I placed those in.
Why has your mother brainwashed you into thinking she comes first, and you are responsible for her? She seems to have warped your headspace into thinking that, instead of it being her duty to support and love you, and develop you as a strong independant person in the world.. YOU (as the child) owe it to her (as the parent).
This is a shocking state.
You should get yourself over to the Elderly care forum on MN, there are many toxic demands that elderly parents place on their children, and you need to develop skills to push back on where you are happy with a boundary being formed.
(I say this as the child in your relationships.. my mother was always prioritising my grandmother, to the point that whilst i wasn't neglected physically, every spare moment in the evening/weekends was shopping for (my healthy, 60-something, richer) gran.. helping her get to the pharmacy, calling her every day or else she'd ring ring ring the landline.. then any attempt to actually have a day as mum/dad/me/my siblings, gran would "feel ill"... this went on for 20 years after even i moved out of home, she lived into her 90s and i look back on my childhood knowing that us kids were neve,r ever a priority... don't do that to your kids.)