If you're just starting your poker career, CardsChat provides a free 30 day course for players that want to improve their game. Be sure to take notes if you feel like you need to so you can refence them later.
Here is the link: https://www.cardschat.com/become-a-winning-poker-player/
There are also similar videos that you can find on YouTube from other creators which may cover different poker topics or go into further detail about the subjects that the 30 day course covers. I can highly recommend YouTube videos if you're more of a visual learner.
Another option that I'd recommend doing after you're done with the course is watching professional twitch streamers. Find one you like and make sure they show their cards while they play. Try to predict what you think the professional will do before they act and compare it to what they actually do. With some critical thinking and a lot of practice, hopefully, you'll play like the professional player.
There are also plenty of books that cover poker strategy if you're into them. I haven't personally read any myself so I cant recommend any, but, I'm sure someone will be kind enough to provide a books for you to consider.
If you're really serious: get a coach. Poker coaches are by far the best way to improve your game no matter what stage you're at. They're not cost friendly - especially not the well known ones, but, if you're invested enough into poker, they might just be exactly what you need.
Lastly, I'd recommend playing hands and going over them with a poker friend of yours. Whenever you're unsure how a certain situation you can always post your hand in a thread here at CardsChat, there are a lot of people who would love to help you. There are also some discord groups that work similarly where you could also post your hand and have others help you work through it and decide what the best actions would be.
I hope I was able to help you, good luck at the tables!