Every songwriter experiences writer's block from time to time. My lyrics are like poems. You may be able to find a more experienced writer in your local songwriters association who can look at your lyrics and give you some advice. I also offer consultation services for songwriters. On the second part of your question, I would advise that you contact your local songwriter's association.
Most larger cities have songwriters' groups that meet once or twice a month.
There you can meet other songwriters with gifts in music writing who may be looking for lyricists. Back to top 100 Getting permission to use someone else's music for my lyrics. I have tried contacting the writer through his manager but I have not gotten an answer yet. You cannot copyright such a song without written permission by contract from the composer of the music, and if they are well-known, they may never respond to your attempts to contact them. My advice is to find a collaborator that you can meet with, work with and know on a personal level.