Step 1- Searches
Go to myaccount.google.com and log in. Alternatively, go to google.com while logged in and click the circle icon in the upper right-hand corner with your image or initials inside. Then click Manage your Google Account.

Click on Manage your data & personalization, located under Privacy & Personalization.

Under the Activity controls panel, you will see checkmarks next to Web & App activity tracking, Location History and YouTube History. Click each one to adjust your settings. You can toggle them off to stop further tracking.

Below Activity controls, click on My Activity under Activity and timeline.

On the menu that appears in the left sidebar, click Delete activity by.

Select how far back you would like to delete your history in the pop-up menu.

Click Delete to confirm.

Step 2 - Data Storage
Open your Google Account page.

From the left navigation panel, click on Data & personalization.

In the Activity controls panel, click on Web & App Activity, followed by Manage Activity.

From this page, you’ll see a list of your past activity — and items with the microphone icon indicate a recording.

Next to the items you want to delete, select the three-dot icon and then Delete.

Step 3 - Ad Blocking
Open your Google Account settings again.

From the left-hand panel, click on Data & personalization.

From the Ad personalization panel, click Go to ad settings.

Click the switch next to Ad personalization is ON. You should now see Ad personalization is OFF.

Step 4 - Ancient History
Click the three-dot menu.

Hover over History and click on History at the top of the menu that appears on the left.

Click Clear browsing data and select your date range for deletion

From here, you can choose to delete your history, cookies and cache.

Select the time range you want to wipe, from the past 24 hours to as early as the beginning of your browsing activity.

I've already done most of it ...

I just went over and checked and I didn't see anything to be worried about.

I did it all a while back ...
Others still just leave it to "default" settings ...