is it time to replace or patch this roof? 15 years old

there's a deteriorated patch near the front of the roof. and some granules exposed in parts of the roof. no active leaking, attic doesn't have mold. does this seem like a patch or a full replacement? roof is 15 years old.

https://preview.redd.it/hg9a5owx1g0h1.png?width=1090&format=png&auto=webp&s=3032a032d1df225d1673d979b7db97c21ae5abc3

https://preview.redd.it/6oo6wpwx1g0h1.png?width=636&format=png&auto=webp&s=b21b698960de70f242e6a1d4716a0fa1d2c6d0ad

https://preview.redd.it/f2zwipwx1g0h1.png?width=1214&format=png&auto=webp&s=5e6894dc2988c2358381865ff94cc84f44ba095b

https://preview.redd.it/5oql1qwx1g0h1.png?width=1214&format=png&auto=webp&s=5df1f05dcfeb9519c05b02361e95b51684066c32

https://preview.redd.it/yt5kz4yx1g0h1.png?width=1200&format=png&auto=webp&s=c8aac7dad90fa9c39676b93a1d561749ba40aa7c

https://preview.redd.it/yhfvdj982g0h1.png?width=1682&format=png&auto=webp&s=0f56d2e0d1a0e35dcc863fef5b37668f0eb0c585