Need help! 5G phone under 22K for official work.Preferably 20k

Long time lurker. Need a phone primarily for official purposes. Requirements are battery life, great 5G connectivity (moto doesn't cut it, keeps showing 4G!), and ability to multitask. Should be stock android.

Camera is not a consideration. Need the phone to last a good 3-4 years.

Edit: No curved screen please. I tend to drop these.