Hello. I cannot write in your topic. But I have the same almost exact symptoms. The same twitching/easy muscle fatigue and even right foot arc vibration(that was really strange that I also have this).
I already did EMG and visited neurologist and he ruled out ALS saying that there is 0 chance to have ALS with this symptoms, so I think you shouldn't worry much
And by any chance did you have covid?
Doctor who did emg suggested that its myopathy since I feel fatigued. But not ALS because there were no denervation. And in reference to doctor suggested CK blood work.
But when the last neurologist saw me he said that there is no chance its ALS, because even with EMG there is no failure or real weakness where I would literally struggle to do things, but fatigue is not ALS symptom.