Some abandonware sites offer "Play in Browser" options using Emscripten. This is often the "best" low-effort way to get a quick fix on an iPad without installing software, though saving your game can be tricky.
There is a profound irony in the fact that a game designed for a mouse and keyboard feels at home on a touchscreen. Championship Manager was essentially an interactive spreadsheet. On a PC, you clicked icons; on an iPad, you tap them. championship manager 01 02 ipad best