Hi and welcome! I'm going to repost a reply I just did for another user if it looks familiar...
You can absolutely take care of your own pool the TFPC (Troublefree Pool Care) way for much, much less than paying a pool service or doing it yourself "assisted"/robbed by your local pool store. No doubt.
Best approach is to check out this page in Pool School (link at top of screen).
https://www.troublefreepool.com/content/123-abc-of-pool-water-chemistry
Then venture further into Pool School. Read that page above twice a day for three days. HA! It does take some time for the learning curve to be overcome, but once the light bulb goes off, you are all set.
TFPC is based on testing yourself with a proper test kit, understanding what your pool needs, and only adding that which is needed to it. Test kit:
https://www.troublefreepool.com/content/124-pool-test-kits-comparison
Saving you the trouble, I'd recommend the TF-100, XL option and Speedstir. You can't go wrong with that combo.
As a starter question, do you have a saltwater chlorine generator? Or know what one is? I won't assume you do. But if so, there is one other test to purchase. The K-1766 Salt test.
You've found the best place to help you manage your pool. Ask as many questions as you'd like, we just ask for people to be engaged and learn the process. As long as pool owners take an active role in learning the process, you will be overwhelmed with the support you receive from the forum users.
If you can fill in your signature with your pool specifics (see my signature for some thoughts on what to include) then we can all see that information each post and provide the best support possible. Edit Profile link (where you can add a signature on the left side):
https://www.troublefreepool.com/profile.php?do=editprofile