Whenever you learn new words that you loved but you think you might probably forgot it, you may write it in a small notebook. Like , have a small notebook maybe where you can write those words so it would be easier for you to find it or read it whenever you have free time, so that it will be easier for you to remember it and maybe you'll never know, you might use it when you are speaking or writing something too. I hope this helps you.
All the best! be safe!
One thing that helped me greatly in learning english spelling was joining a few forums connected to my hobbies and writing to people online. I also installed a spell checker to catch most of my mistakes and asked people that I was talking to to correct me if I made any mistakes. That was, I was able to learn putting in minimal effort, just by chatting with friends that I made online. I highly recommend doing that!
1. Use mnemonics
2. Learn a few rules
3. Learn commonly misspelled words
4. Make a list of the words you have trouble spelling
5. Check word origins in the dictionary
6. Chunk it
7. Sound it out
8. Draw a picture
9. Play word games
Visit the link below to read more about those tips:
Another thing you could do is take Latin in HS, it will help you understand the origin of words and thus help you break down words and understand how the parts content, which in return will not only help you learn the spelling but also the meaning of the word.