Hate alkaline powerd anything to depend on because of the corrosion issues are so common. Ruined so many good tools over the years with alkaline batteries.
If you can manage to get your maglight working again, you can load it with something like this.
https://www.amazon.com/Batteries-Rechargeable-Protection-Fuvaly-D-Batteries/dp/B07TJTQDYG/ref=sr_1_10?crid=124X9J7Z4FJIJ&keywords=dcell+lithium&qid=1684769363&sprefix=dcell+lithium%2Caps%2C121&sr=8-10