Parsing HTML data in SQL Server 2016 for large table

I am trying to parse the HTML data which exists in one of my table but issue is the table size is huge and I can't use the function provided here. I was just wondering if there is any efficient way to parse the data from a huge table.

I tried the solution here and it works great but can't use for huge table.
https://blog.sqlauthority.com/2007/06/16/sql-server-udf-user-defined-function-to-strip-html-parse-html-no-regular-expression/

Sample code here: http://sqlfiddle.com/#!18/27baba/1

Data looks like this:

ID	Valuen
  1	<t><some>this is the value</t></some>another value . <none> 3rd value </none>
  2	<t><bold>Correct value </t></bold>new value . <color> salary </color>

Sample Output:

 ID 	Valuen
   1	 this is the value another value 3rd value
   2	 Correct value  new value . salary 

Please note that I tried using XML parsing as well but it does not work as its unable to convert all the data to XML.

Any help will be appreciated, thank you.

If open to a helper function

Normalized Example or dbFiddle

Select A.ID
      ,B.*
 From  test A
 Cross Apply   [dbo].[tvf-Str-Extract-JSON](ValueN,'>','<') B

Returns

ID	RetSeq	RetVal
1	1   	this is the value
1	2   	another value .
1	3   	3rd value
2	1   	Correct value
2	2   	new value .
2	3   	salary

Same as Above, Just Added a string_agg()

Select A.ID
      ,B.*
 From  test A
 Cross Apply  ( Select NewVal = string_agg(RetVal,' ') WITHIN GROUP (ORDER BY RetSeq) 
                  From [dbo].[tvf-Str-Extract-JSON](ValueN,'>','<')  
              )B

Results

ID	NewVal
1	this is the value another value .   3rd value
2	Correct value  new value .   salary

The Function if Interested

CREATE FUNCTION [dbo].[tvf-Str-Extract-JSON] (@String nvarchar(max),@Delim1 nvarchar(100),@Delim2 nvarchar(100))
Returns Table 
As
Return (  

	Select RetSeq = row_number() over (order by RetSeq)
		  ,RetVal = left(RetVal,charindex(@Delim2,RetVal)-1)
	From  (
			Select RetSeq = [Key]+1
				  ,RetVal = trim(Value)
			 From  OpenJSON( N'["'+replace(string_escape(@String,'json'),@Delim1,'","')+N'"]' )

		  ) C1
	Where charindex(@Delim2,RetVal)>1

)

Please try the following solution on your data set.

SQL

-- DDL and sample data population, start
DECLARE @tbl TABLE (ID int, tokens VARCHAR (500)); 
INSERT INTO @tbl(id, tokens) VALUES 
(1, '<t><some>this is the value</t></some>another value .  <none> 3rd value </none>'),
(2, '<t><bold>Correct value </t></bold>new value .  <color> salary </color>');
-- DDL and sample data population, end

SELECT t.ID
	, Result = STRING_AGG(LEFT(token, CHARINDEX('<', token + '<') - 1), SPACE(1))
FROM @tbl AS t
    CROSS APPLY (SELECT TRY_CAST('<root><r><![CDATA[' + 
        REPLACE(tokens, '>', ']]></r><r><![CDATA[') + 
        ']]></r></root>' AS XML)) AS t1(x)
	CROSS APPLY x.nodes('/root/r[text()][not(substring(text()[1],1,1)="<")]/text()') AS t2(c)
	CROSS APPLY (SELECT c.value('.','VARCHAR(500)')) AS t3(token)
GROUP BY ID;

Output