I would like to compare the Alt allele frequency of a list of thousands SNPs derived from my project with the various populations of 1000 genome project. So, I need alt allele count, could you please help me out how to find this infromation based on GRCh38? here, I read this post about this issue, however, it used genotypes.bcf file of GRCh37 (I couldn't find it for GRCh38), and also as this file is large, it takes almost long time to download and process. I guess this information may be generated before and stored in a databases.
Your suggestions and comments would be highly appreciated.