In the future, if I enter 11 words, and I sort through 12 words manually, will I be able to get to another wallet?
There are 2048 words.
Not all combinations of word will generate a new wallet, as there is checksum. You can play with it here:
https://iancoleman.io/bip39/If you play around with 12 random words there you will see that not word combinations will generate a valid wallet.
Also, remember that the words are not unique. You can have a wallet with 12 equal words that will pass the chekcsum and generate a valid wallet. For example, lets try this:
word word word word word word word word word word word word
But the combinatio of small 12x will generate an invalid mnemonic:
small small small small small small small small small small small small
So are you feeling lucky and want to try to find some coins? Just go to
https://iancoleman.io/bip39/ and click GENERATE button to generate new valid mnemonic combination, ie, new wallets. You will see that you will never find anything...