Influencer is TikTok’s first to follow Chuck Berry’s cover (8)
I believe the answer is:
lobbyist
'influencer' is the definition.
(someone who lobbies politicians)
'is tiktok's first to follow chuck berry's cover' is the wordplay.
'tiktok's first' becomes 't' (bst letter of 'tiktok').
'to follow' means one lot of letters go next to another (some letters go after or follow others).
'chuck' becomes 'lob' (I've seen this before).
'berry's cover' becomes 'by' (I am not sure about this - if you are sure you should believe this answer much more).
'is'+'t'='ist'
'lob'+'by'='lobby'
'ist' put after 'lobby' is 'LOBBYIST'.
Can you help me to learn more?
(Other definitions for lobbyist that I've seen before include "figure influencing lawmakers" , "political campaigner" , "pusher" , "One seeks to influence legislators" , "One tries to influence government in favour of their cause" .)