Struggling to Find Words in My Du'a

Assalamu alaikum. It's like the title says-no matter how much is weighing on my heart, when I try to make du'a, my tongue just won't move. I know Allah knows what's inside me better than I do, but I still wish I could speak it out. It’s been months. There was a time when speaking to Allah in du'a was a comfort, time would fly by, and I’d call on Him by His beautiful names so easily, but now I just can't. For context: I’ve always been someone who finds it hard to open up, even with close friends. Putting feelings into words feels exhausting-like it’s easier to keep things inside, even when they hurt. That wasn’t such a problem with du'a before; it was more in talking to people. When I started learning Allah’s names to call on Him, du'a actually got easier. But now, with more tests coming my way and when I need Him most, I can’t seem to do it. I manage to ask for forgiveness and that’s it-my tongue won’t go further. Earlier, I tried and even recited the du'a of Musa (AS) for a tied tongue, but I still struggled and stopped. Raising my hands feels heavy, they stay low. I feel weak and don’t know how to get past this. It’s frustrating that I can type this out but can’t speak to my Lord. It’s not from lack of need-I just don’t know what’s holding me back.