Macbook (2019) getting hot and beachballing

I suggest the problems you describe are attributable to using the notoriously inefficient "cloud backup and sync" products from Google and Microsoft.

If you want an efficient backup solution use Time Machine, and use iCloud for file synchronization.

Uninstall the Google and Microsoft products and draw your own conclusions. Follow their respective uninstallation instructions. Once uninstalled observe and characterize the effects, and / or post a new EtreCheck report. You can always install those third party products again if you so choose.

tjbevington wrote:

Hi, can you help me know how to "run extensive Disk Repairs and rebuild the Spotlight index" please?

First Aid—

Boot into Internet Recovery (Option Command R) and from the dropdown menu: Utilities>  Disk Utility> run the First Aid on your Macintosh HD, Container, (and the "Macintosh HD-Data" volume as well) If errors are found and repaired, run again until no errors reported. You can safely ignore "warnings"

ref:   How to repair a Mac storage device with Disk Utility - Apple Support

From the Finder >Go>Go to Folder, copy and paste:

~/Library/Metadata/Corespotlight 

you can Delete this ~/Library/Metadata/Corespotlight   folder and reboot the machine, let it finish reindexing a new database and compare your results

Rebuild the Spotlight index on your Mac

Rebuild the Spotlight index on your Mac - Apple Support

you can see it working by entering most anything into the search window

If no improvement or resolve—

You can get a good look at your User/System config. and reveal conflicts or issues, you can download/run this trusted utility  https://etrecheck.com  

If you need help interpreting the report you can post it here in its entirety in the "Additional Text" box in the editing toolbar below, in your reply.

How to use the Add Text Feature when posting an Etrecheck Report

How to use the Add Text Feature When Post… - Apple Community

Your don't need a more expensive drive that is FAST to run Time Machine.

[in my opinion] your issues are likely to be a File System issue.

Once you have a Trusted, disk-based backup at hand, (and not before) you can run extensive Disk Repairs and rebuild the Spotlight index.

If the issues do not come clear, you may have to erase your boot drive (which deletes all your files) then re-install MacOS and restore your files from backup.

¿What is the date of your most recent file backup, and by what method?

You may need it soon.

"On the cloud" is great for sharing photos, but is not a viable backup solution for everything you have. The stuff is not under your control, and is subject to sloppy handling, arbitrary changes in policy, theft, accidental deletion, data loss [are they making frequent backups using best practices?], and discontinuation or throttling of the service. It can easily take three days to restore it at ordinary Internet speeds.

If you do not have a recent local, disk-based backup, your computer is like a ticking Time bomb. You are only one disk failure, one mainboard failure, one crazy software, or one "oops" away from losing EVERYTHING! Drives do not last forever. It is not a question of IF it will fail, only WHEN it will fail. In addition, you never know when crazy software or Pilot Error throws away far more than you intended.

If you are using another direct-to-disk backup method that you prefer, and you currently have a recent disk-based backup, that is great. If not, you should consider using Built-in Time Machine. Take steps to acquire an external drive as soon as possible. If you buy one, a drive 2 to 3 times or larger than your the amount of data to be backed up is preferable for long term trouble-free operation. Do not pay extra for a drive that is fast.  (You can get by for a while with a "found" smaller drive if necessary, but it will eventually become annoying).

Attach your external drive and use

Settings > General > Time machine ...

... to turn on Time Machine and specify what drive to store your Backups on.  It may ask to initialize the new drive, and that is as expected. APFS format is default format if running MacOS 11 Big Sur or later.

Time machine works quietly and automatically in the background, without interrupting your regular work, and only saves the incremental changes (after the first full backup). Time machine backs up your machine — including every connected drive that is in a Mac compatible format. it can not back up Windows format drives.

Time Machine's "claim to fame" is that it is the backup that gets done. It does not ruin performance of the rest of the computer while doing its backup operations. You do not have to set aside a "Special Time" when you only do backups. When you need it, your Time machine Backup is much more likely to be there and be current.

How to use Time Machine to Backup or Restore your Mac:

Back up your Mac with Time Machine - Apple Support