It is usually recommended to start with an ETF tracking a global index. Simple and (relatively) safe for beginners and a winning choice if you invest long term (10+ years).
I agree with Luke’s recommendation to spend some time on one of the many EFT screener/educational sites (my favourite is JustETF), and possibly also take a look at Ramin Nakisa’s PensionCraft channel on youTube.
I personally like cheap all world index funds, like FWRG, FTWG and PRIW. But many other approaches are possible and I’m not a financial advisor. Good luck 