Your л and ль sounds in the first 2 files seem OK to me although could be more pronounced (middle of tongue right down for л, right up to the roof of your mouth for ль).

Your т and ть in думает/думать sound pretty much exactly the same to me.
my attempt...

As for «достопримечательность», that word is so damn difficult! It sounds to me like you're pronouncing both «т»s and the «л» hard when they should be soft, although the rest of the word sounds OK to me.
It took me like 5 attempts to record this (lol)...
...and this is how the experts say it (audio clip is under the "pronunciation" heading)

Another tip is, when you pronounce a consonant soft, try to say the English letter "y" as in "yacht", at the same time as you say the consonant. Don't say it directly after, say it at the same time. If the soft consonant is in word final position (e.g. infinitives of verbs such as «думать»), you may hear a very small, voiceless "y" sound after the consonant, but the important thing is, you are also pronouncing this sound whilst saying the consonant.