You can use the search button in the bottom navigation bar to search for communities but as far as I know it's still pretty bare bones.
Proper search for keywords isn't implemented yet, but this is a well known issue and addressed on GitHub.
See:
Jerboa is a native-android client for Lemmy, built using the native android framework, Jetpack Compose.
Warning: You can submit issues, but between Lemmy and lemmy-ui, I probably won't have too much time to work on them. Learn jetpack compose like I did if you want to help make this app better.
Jerboa is made by Lemmy's developers, and is free, open-source software, meaning no advertising, monetizing, or venture capital, ever. Your donations directly support full-time development of the project.
1Hefs7miXS5ff5Ck5xvmjKjXf5242KzRtK
0x400c96c96acbC6E7B3B43B1dc1BB446540a88A01
41taVyY6e1xApqKyMVDRVxJ76sPkfZhALLTjRvVKpaAh2pBd4wv9RgYj1tSPrx8wc6iE1uWUfjtQdTmTy2FGMeChGVKPQuV
addr1q858t89l2ym6xmrugjs0af9cslfwvnvsh2xxp6x4dcez7pf5tushkp4wl7zxfhm2djp6gq60dk4cmc7seaza5p3slx0sakjutm
You can use the search button in the bottom navigation bar to search for communities but as far as I know it's still pretty bare bones.
Proper search for keywords isn't implemented yet, but this is a well known issue and addressed on GitHub.
See:
~~As far as I can see, there is no search button. There is only a button for subscribed communities with a filter text box. You can't actually search anything there. Or am I missing something?~~
EDIT: I've tried it again and suddenly it does something other than filter subscribed communities. Weird that it didn't work before.
The irony :)