Congrats on transitioning away from eating the flesh of other beings,
@secondmayfly! It does take some getting used to and an initial lack of protein can happen. This happened to me and I actually felt a little light-headed at times when I made a full push away from meat. I think my body just needed a little time to adjust, since those issues faded with time and never returned.
Mock duck served as a kind of "gateway drug" for me moving away from meat. It has a very similar texture to meat, tastes good, and works well with a lot of typical meat-style dishes. Where I live, Thai restaurants often feature it as a "meat" and it also comes in cans, though the cans I've purchased do have very high sodium. And it doesn't have a ton of protein. I mostly ate veggie burgers for that, which probably cost a lot less back "in those days." I recall them being pretty affordable and a lot cheaper than meat. That may have changed.
Also, I found myself getting used to things over time as I ate and experimented with more meat-free foods. The tofu that didn't taste so great at first seemed pretty decent after a few months or a year. So you may find your tastes and qualms changing and adapting over time. I do like firmer tofu or what some call "tofu steak" with a thicker skin around it. I'm still not too excited about mooshier forms of tofu. So some things won't change.
Have you tried falafel? That packs protein with garbanzo beans and sometimes has a slight meat-like texture. It can get dry, so I usually eat it with hummus or some kind of sauce.
I make this simple and cheap recipe often. I happened to come across it on YouTube via a meandering search. You can spice it however you like. I tend to limit the cumin and salt. Depending on how long you cook it, the garbanzos can be more or less mooshy, but the recommended cooking time makes firmer beans. With all those garbanzos, this also ranks decently high in protein intake. Beans are one of nature's unappreciated miracles.
Good luck!