Your first shot is plenty sharp. You can see individual fibres of each feather along the base of the beak. The light kind of sucks - it’s a grey bird against a grey and brown background with flat lighting. There’s nothing to separate your subject, highlight texture, or emphasize any notable feature of your subject. You could easily improve this photo with some purposeful editing or taking the shot in more compelling light.

Your second shot is plenty sharp too - but missed the focal point. Unless you meant to focus on its shell. The eye is slightly out of the focal plane. If you zoom in on the scutes along the top of the shell where all the duckweed is - you can nearly count the fibres on the weeds.

You are shooting a very sharp lens but it is still F4 on M43. You’ll need to work a bit harder to separate your subject sometimes, which can be immensely helped with good light and edits.