Overusing I is common in English writing.
You can write in passive voice, or rewrite to vary where 'I' appears in your sentences, so that they don't all start with I.
This cure can be worse than the disease. Passive voice makes dull (technical) reading.
You can combine multiple such sentences into one:
I went to the store. I bought a cake. I ate it.
becomes: I went to the store, bought a cake, and ate it.
Telegraph style. You can omit 'I' and 'the', 'a' in Resume/CV, newspaper headline writing, texting, and informal email:
Went to store. Bought cake. Ate it.
but not in regular communication.
You can transfer some statements to the background:
At the store, I bought a cake.
I bought a cake at the store.
since if you are at the store, it's because you went there.
When overusing the's, you'll likely need to restructure your sentences to reduce them. Try out different forms, such as replacing "X of Y" with "Y's X" or "Y X", or vice versa, using alternate equivalent phrases.
Pick the most descriptive and precise words to avoid have to add additional clauses (often including "the") to make your meaning more specific.
Replace common adverbial phrases containing 'the' ('in terms of the semantics' => 'semantically') with single word adverbs, etc.
Take care when reducing thes. Missing the in certain places, even when semantically unnecessary, is a red flag that it wasn't written by a native speaker.