I always recommend (and, of course, use myself) GMX. It's run by one of the biggest web hosting companies in the world (Ionos, formerly 1&1), so it's got a decent pedigree and isn't likely to suddenly disappear like some small email services might do.
Opening an account with GMX is simplicity itself. Once you've done so, you can use the 'Mail Collector' facility to get mail sent to your Hotmail/Outlook accounts automatically forwarded to your GMX account, so that you'll only need to log into one provider. (By default mail sent to each of those accounts will go into their own folders in GMX. However, if you want to, you can go into the settings and change things, so that all of your incoming mail goes straight into your main inbox).
https://www.gmx.co.uk