This only work at 1.17+.
Create by dyntes 
publish by Uncle Aniq aka(ANIQYT)
 

This is you can see after you use this addon 
1) This addon is automatic, detects player and player becomes a zombie. 
2) You can put this addon on realm or world 

How to Change Village to zombie villager:
1) Hit that villager and it will change to zombie villager
 

You will get burn after sun appeared

HOW TO GET YOURSELF NOT GET BURRING :
1) find water 
2) use helmet to protect you 
3) Get cover at cave or tree

HOW TO MAKE YOURSELF BECOME DROWNED:
1) wait 1min or more inside water to tranform to drowend
2) if you want become zombie just wait 1 min or more everywhere except water
 

ANY MOBS CAN'T ATACK YOU :
1)Yes. all mobs can't attck you except Iron golem:v. so pls becareful
2) mobs will take revenge when you hit

Note: This addon is BETA, which means it is not yet complete. Enjoy!