Why my citations and h-index differ between Researchgate and google scholar?

https://scholar.google.com/citations?hl=en&view_op=list_works&gmla=AH8HC4yl66YjnWqaUKtBJIwulaQxsImgJxFdH2AMH3c11ZDZgSJWxwSk1t_P3Hn9xlS_FjcyALdvTBAwSnGTX4-hz-Im&user=rlnpHHwAAAAJ

16 July 2025 7,557 1 View