For awhile pedalling my bike has been getting increasingly difficult. First there was a squeaking. I figured maybe because I had put too much force riding uphill. Then there was a screeching cracking sound with the high squeaking. I saw there was just build up and figured that's why there was noises.
I bought oil and grease coated well, and fixed the problem. But then it go worse now the pedals will either get stuck and I have to reset, or it will be very loose feeling like the chain popped off.
Worst of all, now when I bring my foot down to pedal every down motion will make the bike feel like it shifts from the back tire moving left or right, not sure which way. But it's in a side to side motion. I don't feel it while walking the bike.