No dumb questions.
First: the white balance is off (too cool, blue) and the picture needs a geometric correction. There has been sharpening applied, but the picture does not really look sharp. The shadows (bushes) need to be lightened up.
Second: The picture is heavily over processed and has many artefacts:
You can't save that picture.
If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html
Also: just as a sea horizon must be level, so a vertical building must be vertical. The lighthouse has a lean. Is there a spirit level on your tripod? If not, such things can often be fixed in post, but at a potential cost in quality.
(On reflection that's not an "also". I think that comes under "geometric correction" but Abambo has certainly seen more required fixes than I did. )
Tghere is also a hite halo around the structure.
The white halo as seen at 200%:
That comes probably from sharpening.
The blocks in the clouds and the “ghost” image of the tower come from JPEG compression. You should review your files at 100% for focus (sharpness) and at 200-300% for artefacts.
As for rotation, see here: https://www.adobe.com/products/photoshop/rotate-image.html
If you look at the bushes (also at 200%) you see that no detail is left, but the bushes don't look like being out of focus as with a correct DOF applied. This is typical for phone pictures, and that destroys all hope to recover the image for stock.
Ok. Tripod is recommended for stock work, because they must be perfect. However, you can correct the lighthouse in Photoshop by rotating.
(PS there is no difficulty using a tripod with a phone, adaptors are easy to get - I have one.)
I am not an advanced used in PS.
What do you mean by rotating (90 degree angle ? or something)
Sorry mate, just trying to understand and process at least one photo to get it passed which would teach me what needs to be done with similar in the newar future.
Photoshop can free rotate by a few degrees. Start by understanding how much you need to rotate it. Tip: do. NOT repeatedly edit a JPEG. Never. This will destroy quality. One rotation you may get away with. But never edit JPEG more than once - save as PSD for your intermediate format.
Best advice, take some online photography courses or enroll in a structured course at your local college/uni. Learning good photographic technique is an acquired skill that requires practice, practice, practice.
Snapshots captured with a phone camera rarely produce high quality results except under ideal conditions. However, there are some things you can do to improve your chances of success -- shoot in good daytime light, brace yourself against a solid object to remove motion, use manual settings, zoom out, etc...
In the meantime, read these links.
Hope that helps.