Cheap tools are expensive tools! And tools that aren't easy to use are worthless

I would recommend the Crank Brothers M10 (longer tools easier to use), Speedier Lever (protects the knuckles and has an install side) and a Rema Tip-Top patch kit (Touring 2 but they make the best patch kits) then whatever size tube is needed with the proper valve. For a pump, Topeak Morph pumps (Road or Mountain or Mini if I need something small) or the similar equivalent from Lezyne because having something closer to a floor pump makes life easier. I also generally carry a Planet Bike Red Zeppelin and CO2 cartridge just in case.

Obviously you might have different needs but that generally will do most bikes pretty well. I typically add some nitrile gloves and maybe some cash if I am not carrying a wallet. Build something you can use easily.

If you don't know how to do something you may not want to carry stuff but you may want to carry it so someone else could help you. I would rather have a tube that I chose to not learn how to install then not have it be stuck and a Good Samaritan comes by and is willing to help but doesn't have what you need.

For bags I highly recommend Topeak's QuickClick stuff it is easy to move from bike to bike with an F25 Fixer on each saddle. Plus they have different sizes and also waterproof ones and different openings and makes life super easy.

Your local shop will have this stuff or can easily get it if not. If you really cannot interact with humans in real life, there are actual online bike shops that have a brick and mortar or at the very least are specific bike shops that aren't just warehouses for anything run by greedy billionaires