I use a Samsung device which unforunately doesn't have the app lock feature.

But it does have a "secure folder" which is more or less what you mean by "spaces", I guess.

The downside of the secure folder against normal app locking is that the apps are no longer seamlessly integrated with the launcher and other apps. It's definitely more secure but is ultimately overkill for my needs.

Yeah and for me it's no option because I have all the banking apps in my secure folder and as such I have a pretty long password on it. If you could have two secure folders then yeah maybe.

And I also have a work profile as well through "Island" :)