I will give you instant access to my @TGScraperBot, which can scrape members from public groups.
Bot will provide you list with members in .txt format with parameters which you need: username, id, first name, last name. Members could be filtered by their activity: last 24 hours active, last week active and all members.
Watch job preview video for more details.
Bot can scrape members from public groups.
Bot can't scrape members from channels.
Bot can't add members to group or channel.
Feel free to contact me anytime.