Begginer needing some help, please

Tables are for tabular data, not layouts.

What are you creating -- a web app, email, or website?

Which devices are you building this for -- mobile, tablet, desktop?

By CTA it looks like you are copying code from another site with a button. What looks like happened is that you went into code and it should have gone between the <td></td> tags but there was an overlap and your pasted code overwrote some of the good code that was on the page and that is causing this domino effect of tag errors you are getting. I would delete the CTAs entirely and make sure they are inside the <td></td> that I mentioned.

line 52 does not have a closing TD tag as in </td>

line 53 is a complete mess. The structure should look like <td><a href=""><img src="" alt=""></a></td>. . File name must not have spaces.

line 54 is a complete mess like line 53.

line 104 has a rogue < before the <img> tag and has a space in the filname.

line 113 has nothing wrong as long as it is to close a <tr> tage preceding it.

line 100 a <tbody> tag is illegal. Can only be used as a direct descendant of a <table> tag

Why have you used a table structure? What is a CTA? Why are you tackling a website without HTML knowledge?