Having spent a number of years without regular indoor flush toilets (on a few occaions, total several years), I would highly recommend reading “Humanure”, it is online. It is the best book I’ve read about how to deal with excrement in a clean, safe and easy way without regular plumbing.
Burying human (or any kind of) excrement in plastic bags will so slow down composting that the crap will remain nasty for a long, long time. Building or making a simple composting toilet and using compostable material such as sawdust (from raw lumber or wood, not kiln dried lumber), leaves, leaf mould, dirt, or chipper shredded leaves/sticks etc), and done properly, composts crap quickly and easily. I have done it and I highly recommend it.
Pit outhouses are doable but much more nasty and can pollute ground water if the water table is high. Even a trench latrine is better than a pit outhouse or plastic bags. It composts very quickly if the trench is not very deep, and a movable little “outhouse” can be used. But composting toilets can even be used indoors. When done right, there is practically no smell at all.
I have read much about composting and composting toilets and looked at/read everything Lehmans sells. I can't build a composting toilet and have no where to put such in my small townhouse if I bought one - gave up on that idea. I'm going to have to bury it.
I live in town and that limits me, too. I actually have a stack of large, strong, paper bags and would likely use those in potties instead of plastic bags. Some of these paper bags are made for trash compactor units (have a thin coating of plastic inside them) but most of them are just paper I bought at Kroger. One day I saw these large strong paper bags on the bottom shelf where plastic trashbags are and they are not expensive. I don't recall the price but was surprised it wasn't more.
I actually got them to put regular household trash in. I have an outdoor fireplace and got that to burn trash in. Didn't want to put trash in plastic bags to burn plastic in that fireplace, so got paper bags. I need to get more.
Unless I go live with the Amish, going to have to bury human waste. I'll find a place to dump urine instead of burying it but I don't know now where that will be.
I grew up using an outhouse. We had a shower but no potties. Think I was in 9th grade before we had indoor potties. Now, I have three regular potties in my house - no more outhouses.
What do you do if it's the dead of winter? Like January in Minnesota?