First of all sending you gentle hugs, it's a bit overwhelming when you start but you soon get into the swing of things.
Don't feel like you can only shop in the free from aisles of the supermarket - there are lots of things that are naturally gluten free and you soon learn to visually check for gluten containing ingredients. What you need to look for is Barley, Rye, Oats, Wheat and Spelt (BROWS) also as a coeliac you shouldn't be eating anything that is a "may contain" unless you've been told by a medical expert that you can.
Avoid the scanner apps - their information is not often up to date. Coeliac UK is good for advice, there are a lot of coeliac friendly Facebook Groups, including some created by chefs. I hugely recommend the Facebook group, recipe books and website of Becky Excell Gluten Free (website is glutenfreecuppatea)
You might need to shop around to find the food that you like as lots taste different - don't rule our GF bread because one brand didn't taste nice, there are lots of others and they all taste slightly different.
At home you need to keep some things separate - we only have one toaster, but my daughter's toast goes in a toaster bag to avoid gluteny crumbs. You can't share butter/spread (she has her own in the fridge) If cooking her stuff goes at the top of the oven and gluten stuff at the bottom, although we ofter just naturally cook GF.
You're welcome to message me - we've been doing this for 4 years and it does get easier.