Edit, 06.12.2021:
I made a Mistake with the Beat. It´s an eightcount not a sixcount ^^´ 
I Added a Bridge between Chorus and Verse
I could´nt find the right Chord Name for the G6sus and the C/B Chord i think it does´nt really exist.
If you can help me, to Name these two Chords it would be appreciated.

Chord: G6sus
e|-------|----
B|-------|----
G|-------|----
D|-------|----
A|-------|---O
E|-------|----

---|-------|--
---|---O---|--
---|-------|--
---|-------|--
---|-------|--
---|---O---|--

-----|--------
-----|--------
-----|--------
-----|--------
-----|--------
-----|--------

--------------
--------------
--------------
--------------
--------------
--------------

-|
-|
-|
-|
-|
-|

Chord C/B
e|-------|----
B|---O---|----
G|-------|----
D|-------|----
A|-------|---O
E|-------|----

---|-------|--
---|-------|--
---|-------|--
---|-------|--
---|-------|--
---|-------|--

-----|--------
-----|--------
-----|--------
-----|--------
-----|--------
-----|--------

--------------
--------------
--------------
--------------
--------------
--------------

-|
-|
-|
-|
-|
-|

Here the new Version with an updated verse and chorus:


Picking pattern verse is:

         
e|------------
B|------------
G|------------
D|--------0---
A|--0-2-------
E|----------3-
      1     2 

              
--------------
--------------
--------------
--------------
--------------
--------------
    3     4   

              
--0-----------
--------2-----
--------------
--------------
--------------
--------------
  5     6     

        
--------------
--------------
--------------
--------------
----------0-2-
--------------
7     8     1 

--------------
--------------
----------0---
--0-----------
--------------
----3---------
    2     3   

--------0-----
--------------
--------------
--------------
--------------
--------------
  4     5     

-------------|
2------------|
-------------|
-------------|
-------------|
-------------|
6     7     8

       
e|------------
B|------------
G|------------
D|--------0---
A|--0-2-----0-
E|------------
      1     2 

              
--------------
--------------
----------2---
----2---------
--------------
--------------
    3     4   

            
--0-----------
--1-----------
--------------
--------------
--------------
--------------
  5     6     


--------------
--------------
--------------
--------------
----------0-2-
--------------
7     8     1 

--------------
--------------
----------0---
--0-----------
--------------
----3---------
    2     3   

--------0-----
--------------
--------------
--------------
--------------
--------------
  4     5     

-------------|
2------------|
-------------|
-------------|
-------------|
-------------|
6     7     8


Picking pattern chorus:

             
e|------------
B|------------
G|------------
D|----------2-
A|----3-------
E|------------
      1     2 

              
--------------
--------------
----0---------
--------------
--------------
--------------
    3     4   

           
--------------
--------------
--------------
--------0-----
--2-----------
--------------
  5     6     

           
--------------
--------------
0-------------
--------------
------------0-
--------------
7     8     1 

--------------
--------------
----------2---
----2---------
--------------
--------------
    2     3   

--------0-----
--------------
--------------
--------------
--------------
--------------
  4     5     

-------------------|
1------------------|
------2------------|
-------------------|
-------------------|
-------------------|
6     7     8



[Verse 1]
         
I feel unhappy

   
, I feel so sa

d
         
I've lost the 

          
best friend th


at I ever had
         
She was my wom

   
an, I loved he

r so
        
But it's too l

        
ate now, I've 

let her go


[Chorus]
          
I'm going thro

    
ugh changes
          
I'm going thro

        
ugh changes

             
.... 

    

[Verse 2]
         
We shared the 

       
years, we shar

ed each day
       
In love, toget

     
her, we found 

the way
         
But soon, the 

      
world had its 

evil way
        
My heart was b

       
linded, love w

ent astray


[Chorus]
          
I'm going thro

    
ugh changes
          
I'm going thro

    
ugh changes

             
.... 

    

[Verse 3]
         
It took so lon

  
g to realise
       
And I can stil

       
l hear her las

t goodbyes
         
Now, all my da

   
ys are filled 

with tears
        
Wish I could g

      
o back and cha

nge these year

s


[Chorus]
          
I'm going thro

    
ugh changes
          
I'm going thro

    
ugh changes