You can't get any new VHS or SVHS tape decks. They stopped manufacturing them several years ago.
You can still get DVD, DVD/Blu-Ray, and DVD/Blu-Ray/Blu-Ray 4K players.
Walmart, Target, and Best Buy have definitely cut back on CDs. These places never had deep selections, but now their selections are virtually NIL.
DVD and Blu-Ray selections may have gotten a bit smaller – but don't give the impression that the stores want to quit the business (as they have...
Thrift stores are quite happy to take DVDs, Blu-Ray discs, CDs, and LPs.
They may not be interested in VHS tapes, or may have restrictions such as "Disney titles only." I haven't seen many Compact Cassettes at these places, so they might not be interested in those, either.