Apologies if this is already well known but I hadn't heard of the assistive touch menu. Take a look to add a home button or customize to whatever you want. I've made this a shortcut to reach control center and notiications which makes it much easier for one handed usage. You can control the opacity and position of the button to your liking. Lots of customization options.
Settings - general - accessibility - assistive touch
Settings - general - accessibility - assistive touch