diff --git a/pyodmongo/queries/query_string.py b/pyodmongo/queries/query_string.py
index fd74b4f..289db13 100644
--- a/pyodmongo/queries/query_string.py
+++ b/pyodmongo/queries/query_string.py
@@ -1,8 +1,8 @@
 from ..models.db_model import DbModel
 from ..models.db_field_info import DbField
-from ..models.query_operators import QueryOperator
-from .operators import and_, sort
-from typing import Type
+from ..models.query_operators import QueryOperator, LogicalOperator
+from .operators import and_, or_, sort
+from typing import Type, Literal
 from datetime import datetime
 import re
 
@@ -69,7 +69,8 @@ def js_regex_to_python(js_regex_str):
 def mount_query_filter(
     Model: Type[DbModel],
     items: dict,
-    initial_comparison_operators: list[QueryOperator],
+    query_operator: Literal["and", "or"] = "and",
+    initial_comparison_operators: list[QueryOperator] = [],
 ) -> QueryOperator:
     """
     Constructs a MongoDB query filter from a dictionary of conditions and initializes
@@ -100,36 +101,68 @@ def mount_query_filter(
         raise TypeError("Model must be a DbModel")
     sort_operators = None
     for key, value in items.items():
+        key = key.strip()
         value = value.strip()
         if value == "":
             continue
         split_result = key.strip().rsplit(sep="_", maxsplit=1)
-        operator = f"${split_result[-1]}"
-        if operator not in ["$eq", "$gt", "$gte", "$in", "$lt", "$lte", "$ne", "$nin"]:
-            if operator in ["$sort"]:
+        operator = f"{split_result[-1]}"
+        if operator not in [
+            "eq",
+            "gt",
+            "gte",
+            "in",
+            "lt",
+            "lte",
+            "ne",
+            "nin",
+            "and",
+            "or",
+        ]:
+            if operator in ["sort"]:
                 value = eval(value)
                 for v in value:
                     v[0] = getattr(Model, v[0])
                 sort_operators = sort(*value)
             continue
+        if operator in ["and", "or"]:
+            value, _ = mount_query_filter(
+                Model=Model,
+                items=eval(value),
+                query_operator=operator,
+                initial_comparison_operators=[],
+            )
         try:
             value = datetime.fromisoformat(value)
         except (TypeError, ValueError):
             try:
+                if type(value) == str and (
+                    value.capitalize() == "True" or value.capitalize() == "False"
+                ):
+                    value = value.capitalize()
                 value = eval(value)
-            except (NameError, SyntaxError):
+            except (NameError, SyntaxError, TypeError):
                 value = value
         field_name = split_result[0]
         if type(value) is list:
             for index, item in enumerate(value):
                 value[index] = js_regex_to_python(item)
-        try:
-            db_field_info: DbField = eval("Model." + field_name)
-        except AttributeError:
-            raise AttributeError(f"There's no field '{field_name}' in {Model.__name__}")
-        initial_comparison_operators.append(
-            db_field_info.comparison_operator(operator=operator, value=value)
-        )
+        if type(value) != LogicalOperator:
+            try:
+                db_field_info: DbField = getattr(Model, field_name)
+            except AttributeError:
+                raise AttributeError(
+                    f"There's no field '{field_name}' in {Model.__name__}"
+                )
+            initial_comparison_operators.append(
+                db_field_info.comparison_operator(operator="$" + operator, value=value)
+            )
+        else:
+            initial_comparison_operators.append(value)
+            pass
     if len(initial_comparison_operators) == 0:
         return None, sort_operators
-    return and_(*initial_comparison_operators), sort_operators
+    if query_operator == "or":
+        return or_(*initial_comparison_operators), sort_operators
+    else:
+        return and_(*initial_comparison_operators), sort_operators
diff --git a/tests/test_queries.py b/tests/test_queries.py
index b6ffe72..d8468d7 100644
--- a/tests/test_queries.py
+++ b/tests/test_queries.py
@@ -481,3 +481,24 @@ class MyModel(DbModel):
 
 def test_to_dict_query_operator_default():
     assert QueryOperator().to_dict() is None
+
+
+def test_mount_query_filter_with_logical_operators():
+    class MyClass(DbModel):
+        attr_1: str
+        attr_2: int
+        attr_3: bool
+        _collection: ClassVar = "my_class"
+
+    dict_input = {
+        "attr_3_eq": "true",
+        "_or": "{'attr_1_eq': 'value_1', 'attr_2_lte': '10'}",
+    }
+    query, _ = mount_query_filter(Model=MyClass, items=dict_input)
+    assert query == and_(
+        eq(MyClass.attr_3, True),
+        or_(eq(MyClass.attr_1, "value_1"), lte(MyClass.attr_2, 10)),
+    )
+    assert query == (MyClass.attr_3 == True) & (
+        (MyClass.attr_1 == "value_1") | (MyClass.attr_2 <= 10)
+    )