No problem ,everyone starts somewhere!
Try the "Photo ID" option on Merlin Bird ID App, it's free and surprisingly good, at least for North American and European birds where the training dataset is well-developed. In Ecuador last month, I met a volunteer who was gathering photos and sound recordings of species there, precisely to improve the dataset for Ecuadorian birds.
For your bird, which falls into the "streaky little brown thing" category, one of the most obvious clues is the bill - compare your bird with Jeff's "streaky little brown thing" female Reed Bunting - yours has a long, slim "pipit" bill, while Jeff's has a stout, stubby "finch/bunting" bill. Jeff's Blackbird further up the page has a more typical "thrush" bill. Also, Song thrush is quite a bit bigger, though size is difficult to tell from a photo.