"I do not want to lose him."

Translation: Jag vill inte förlora honom.

[legresam]

Why can't I use "tappa" here?

[Zmrzlina]

Tappa is used for physically dropping something.

[Snommelp]

Accidentally switched keyboards mid-answer. You will be pleased to know that Duolingo accepts førlora as a minor typo.

[Vithralas]

Good to know, hahahahaha