How to avoid Conflict With two library

Try this
(From here https://api.jquery.com/jquery.noconflict/);

<script src="~/assets/plugins/jquery-steps/jquery.steps.min.js"></script>
<script src="~/assets/plugins/dropify/js/dropify.min.js"></script>
<script src="~/assets/js/jquery.form-upload.init.js"></script>
<script src="~/assets/js/jQuery-3.5.1.js"></script>
<script>
jQuery.noConflict();
jQuery((function( $ ) {
 // jQuery code here using $ as per normal
});

// Code that uses other library's $ can follow here.
</script>

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If you need to use the library functions inside a jQuery block then do this

<script src="~/assets/plugins/jquery-steps/jquery.steps.min.js"></script>
<script src="~/assets/plugins/dropify/js/dropify.min.js"></script>
<script src="~/assets/js/jquery.form-upload.init.js"></script>
<script src="~/assets/js/jQuery-3.5.1.js"></script>
<script>
jQuery.noConflict();
jQuery((function( jq$ ) {
 // use jq$ for jQuery functions
 // If other libraries are using $ then there will no longer be a conflict
 // providing you use jq$ for jQuery
 // Note: you can change jq$ to anything convenient (providing it does not
 // clash with anything else in scope)
 jq$('.class').click( ... );

 // Use other library code here as required
});
</script>

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Julian Hansen but this prevent conflict with jquery codes not library 

What are the error messages you get?

but this prevent conflict with jquery codes not library     

                           

You will need to show us the code - it is not clear what you are asking.

How is the conflict showing - are you getting an error or is it that code does not work?
Can you provide links to the home pages for the libraries we are using - so we can at least try to replicate the problem?

The more information you provide the more we can help you.

Hi,
You need to check if all plugins are compatible with jQuery-3.5.1.js
If not you can try to update with the latest version of each plugin.

If there are not compatible and no update
You can tried https://jquery.com/upgrade-guide/3.0/#jquery-migrate-plugin
https://github.com/jquery/jquery-migrate

Or you can downgrade and use jQuery v2 instead of v3
Check in browser console for errors: Chrome right-click / inspect

Michel Plungjan No error message
when i remove jquery steps script from html code and upload image Image uploaded successfully like images below

and when I put Jquery steps link library and uploaded image it still for this preview and Image Doesn't Preview here

We need to see errors. Repeat the process but open your console (F12), select the console tab. Now do your test and let us know what errors you are seeing.

Julian Hansen  this is my console No Errors