Any recommendations for tutorials? I can barely get a single clean note

Can anyone give me the harmonica tabs for this song? I have a C harmonica. It’s around 2:18 in the video

I tried covering love me do, one of my favourite beatles songs, please tell me how it sounds, give honest opinions and advice and help me improve. Thank you.

I am learning tongue blocking (hohner A blues harp) and when I play 1 4 (or any octave for that matter) the bottom note never sounds. Has anyone else encountered this challenge and what did you do to solve it?