TLT, Long Term Treasury, Share Price dropping like madness.

I’ve invested in several long-term T-Bond ETFs in Korea, which I believe are similar to the U.S. TLT. However, their share prices have been dropping significantly, and it’s starting to make me question this investment. 😅

Can someone explain what’s happening here? With bond yields now higher, my understanding is that holding these ETFs long-term should allow the interest payments to eventually offset the drop in share price. Is that accurate, or am I missing something? Would love some insights—thanks in advance!