Use a Stream:
Stream.of(find1(), find2(), find3())
.filter(Optional::isPresent)
.map(Optional::get)
.findFirst();
If you need to evaluate the find methods lazily, use supplier functions:
Stream.of(this::find1, this::find2, this::find3)
.map(Supplier::get)
.filter(Optional::isPresent)
.map(Optional::get)
.findFirst();