This old timer is back again. Can you help? [View all]

2 issues:
1) I use 2 email addresses. One is private. No problem there but I also use a Hotmail(outlook) account for other "stuff"..
Herein lies the problem.
On my Inbox, the "inbox" entries scroll up before I have a chance to read them. Cannot seem to correct this, they are just gone. The 'Junk " is fine. I have Googled for a solution, nothing seems to address this

2)On the same account, I have an accumulation of deleted items(now up to 2363 items), I cannot delete them permanently. Checked 'Help" Googled, no help. I don't seen to have any way to get rid of them.
Any ideas? There seems to be no option to delete from the deleted items on this page.
I'm running an old Windows 10 computer and am trying to delete and simplify stuff because I have no money for a new computer.
Any thoughts about buying the $30 update for a year while I look for a used computer that will accept Win 11? My computer contact told me he has a long list of people looking for a good used one and I'm way down the list.
I'm a computer idiot so I would love a simple answer if you experts can help.
Thanks,
PR