wp 5.6 jquery deprecations

Since updated to wp 5.6 I got a weird problem:
I got a portfolio website which I made using the “pure” theme. it is hosted by ionos and is a wp managed (meaning that ionos takes care of the updates and so on…) The English version of the portfolio works as expected: all the images load fine and everything looks correct. However, on the Spanish page, none of the images would load. The only thing showing up, other than text are the links to two youtube videos.
I tried to delete the Spanish page, duplicate the English one (copy+paste from the English portfolio to the new page) but nothing works. I got installed jquery migrate plugin, which did not solve the issue. In the plugin setting I tried to use the legacy 1.12.4-wp jquery version, to no avail.
I got some “jQuery.fn.load() is deprecated” messages and also “jQuery.fn.live() is deprecated” message.
I am far from an expert in website developing. I just set up my website to promote myself so I find myself out of my depth here. I tried to look on the internet for any solution but it has been 2 days and I am still stuck. It is really important for me to fix this. Any help would be much appreciated at this point.

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