Degrowth

Full agree - meat substitutions make this transition extremely easy, you can find a drop-in replacement for almost anything and essentially eat the same stuff you did before. I wrote a list of favorites a couple years ago, it's pretty specific to local stores and I'll admit I forgot some of these existed, maybe my local shops stopped carrying them? https://slrpnk.net/post/1614342. Some local restaurants make absolutely amazing fake meat in-house with seitan (can you tell I live in a big city?) and I've been meaning to find some good recipes for that.

Around here the grocery stores often split meat substitutes between the vegetables section and the freezer section. So if you can't find something and it doesn't have to be frozen, check if they jammed it in between bags of lettuce or something.