python is usually the next step up in admin land
python is a pretty standard install on linux systems since so many things like you're talking about use it
Like others said: sql, sql, sql. The syntax is probably easier than excel, but a lot of people stink at it because they don't want to invest in the spatial reasoning required to make it work magic, and that opens doors to easy opportunity.
If you can get into a position like reporting or data quality, and be "that person" that fixes a dreaded slow query to make it run in milliseconds instead of minutes, then you'll get your proverbial blank check to go where you want. Those queries exist in just about every business.
Take a look around for "sql portfolio projects" for more complete stuff that goes beyond tutorials.
Thought I might follow up since I had an interview today - I never stop interviewing - and was asked about duration. My off-the-cuff response was "if a company invests in its employees, offers growth and promotes internally, then I will work for a place longer. If it does not and only offers a dead-end role with no appreciable growth, then I will look for that opportunity elsewhere."
Knock off the childish fucking gatekeeping and go back to reddit. It's what the wider industry uses.